# FMOD Engine

**URL:** https://qa.fmod.com/c/fmodapi/6.md?no_subcategories=false&page=7

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**Page:** 8

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## [How to output a sine wave to a specific sound card channel?](https://qa.fmod.com/t/how-to-output-a-sine-wave-to-a-specific-sound-card-channel/22536)

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**Author:** [@martin\_4711](https://qa.fmod.com/u/martin_4711)\
**Replies:** 2\
**Last updated:** [January 28, 2025, 3:18am UTC](https://qa.fmod.com/t/how-to-output-a-sine-wave-to-a-specific-sound-card-channel/22536 "2025-01-28T03:18:39Z")

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Hi, I want to write a small application, where the user can select a sound card (FMOD driver) and a channel of this sound card (e.g. from 1 to 8, if the sound card is 7.1). The application shall then play a sine wave on…

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## [Debug Symbols for FMOD 2.02.21](https://qa.fmod.com/t/debug-symbols-for-fmod-2-02-21/22504)

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**Author:** [@JaidonSkyBoxDev](https://qa.fmod.com/u/JaidonSkyBoxDev)\
**Replies:** 2\
**Last updated:** [January 15, 2025, 8:21pm UTC](https://qa.fmod.com/t/debug-symbols-for-fmod-2-02-21/22504 "2025-01-15T20:21:07Z")

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Hello! I’m working on an issue with our Android application that causes a hang when calling System::mixerSuspend(). Since this FMOD version has been working normally for us until now, it looks to be a problem somewhere …

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## [Error when builiding banks for PlayStation 4: "Failed to encode bank due to the following error: An operating system based file error was encountered."](https://qa.fmod.com/t/error-when-builiding-banks-for-playstation-4-failed-to-encode-bank-due-to-the-following-error-an-operating-system-based-file-error-was-encountered/18357)

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**Author:** [@filvox](https://qa.fmod.com/u/filvox)\
**Replies:** 14\
**Last updated:** [January 14, 2025, 10:54pm UTC](https://qa.fmod.com/t/error-when-builiding-banks-for-playstation-4-failed-to-encode-bank-due-to-the-following-error-an-operating-system-based-file-error-was-encountered/18357 "2025-01-14T22:54:52Z")

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Like the title says. When building the “VO” bank for PlayStation 4 I get this error: Failed to encode bank “VO” due to the following error: An operating system based file error was encountered. I work with Unreal Engine …

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## [Noob Question - C# Wrapper](https://qa.fmod.com/t/noob-question-c-wrapper/22491)

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**Author:** [@AvanMadisen](https://qa.fmod.com/u/AvanMadisen)\
**Replies:** 2\
**Last updated:** [January 13, 2025, 7:14pm UTC](https://qa.fmod.com/t/noob-question-c-wrapper/22491 "2025-01-13T19:14:08Z")

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Hi, Trying to find an alternative audio management system for a Monogame project (Monogame’s built in audio is the barest of barebones you can get) and FMOD came highly recommended but I’m having trouble getting started…

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## [Change output type in the game](https://qa.fmod.com/t/change-output-type-in-the-game/22448)

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**Author:** [@Sadcatstudios](https://qa.fmod.com/u/Sadcatstudios)\
**Replies:** 2\
**Last updated:** [January 10, 2025, 5:53am UTC](https://qa.fmod.com/t/change-output-type-in-the-game/22448 "2025-01-10T05:53:36Z")

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Hi, We have a multiplatform FMOD build for our game made in Unity. We want to implement a setting for every platform for users to be able to select a preferred audio device to adjust in-game audio settings for this. W…

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## [Playing mpeg radio station on PS4](https://qa.fmod.com/t/playing-mpeg-radio-station-on-ps4/22368)

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**Author:** [@stargx](https://qa.fmod.com/u/stargx)\
**Replies:** 11\
**Last updated:** [January 9, 2025, 1:16am UTC](https://qa.fmod.com/t/playing-mpeg-radio-station-on-ps4/22368 "2025-01-09T01:16:50Z")

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Hi, I’m tyring to play a radio stream on PS4, but I’m getting a FMOD\_ERR\_FORMAT error from system-\>playSound(…). The stream is mpeg. Is there something I need to enable on PS4 to get this to work? Here’s the url: yp…

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## [Sound callbacks in iOS background mode](https://qa.fmod.com/t/sound-callbacks-in-ios-background-mode/20256)

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**Author:** [@andy55](https://qa.fmod.com/u/andy55)\
**Replies:** 9\
**Last updated:** [June 20, 2023, 1:21pm UTC](https://qa.fmod.com/t/sound-callbacks-in-ios-background-mode/20256 "2023-06-20T13:21:36Z")

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Hi warriors, iOS background audio going nicely here under Unity, but I need a trigger to start the next audio track when the current track completes. Normally, there is setCallback() + FMOD\_CHANNELCONTROL\_CALLBACK\_END,…

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## [File not found Problem HTML5 (loadBankFile method)](https://qa.fmod.com/t/file-not-found-problem-html5-loadbankfile-method/22467)

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**Author:** [@PuskayGabone](https://qa.fmod.com/u/PuskayGabone)\
**Replies:** 1\
**Last updated:** [January 6, 2025, 11:20pm UTC](https://qa.fmod.com/t/file-not-found-problem-html5-loadbankfile-method/22467 "2025-01-06T23:20:47Z")

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Error 18: “File not found”. What I do wrong? nextState = async () =\> { try { let bank = {} const res = this.system.loadBankFile("/Desktop/Attic.strings.bank", FMOD.STUDIO\_LOAD\_BANK\_NORMA…

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## [Creating a custom plugin](https://qa.fmod.com/t/creating-a-custom-plugin/19864)

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**Author:** [@apfelbaum](https://qa.fmod.com/u/apfelbaum)\
**Replies:** 32\
**Last updated:** [December 31, 2024, 7:44am UTC](https://qa.fmod.com/t/creating-a-custom-plugin/19864 "2024-12-31T07:44:17Z")

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Hi, I just started creating my own plugin. I guess I have the includes and dll. linking for the fmod studio apu correctly setup. What I want to do now is create a granular synth on my own. The general idea is to have a…

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## [Relationship between event instance and description](https://qa.fmod.com/t/relationship-between-event-instance-and-description/22401)

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**Author:** [@Slipstream1](https://qa.fmod.com/u/Slipstream1)\
**Replies:** 3\
**Last updated:** [December 30, 2024, 3:15pm UTC](https://qa.fmod.com/t/relationship-between-event-instance-and-description/22401 "2024-12-30T15:15:35Z")

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Good Day, This may sound like a strange question but I’m interested in the relationship between an event description and any instances it creates. I understand that you create a description and then an instance, but do…

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## [Sync/async when using event.get/setTimelinePosition](https://qa.fmod.com/t/sync-async-when-using-event-get-settimelineposition/22441)

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**Author:** [@gswind123](https://qa.fmod.com/u/gswind123)\
**Replies:** 1\
**Last updated:** [December 29, 2024, 10:34pm UTC](https://qa.fmod.com/t/sync-async-when-using-event-get-settimelineposition/22441 "2024-12-29T22:34:13Z")

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Hello, I’m currently working on how to accurately track the position of a playing BGM in my game. I am using the EventInstance::getTimelinePosition function and came across the a doc here: https://www.fmod.com/docs/2.0…

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## [VCA mute functionality - feature request](https://qa.fmod.com/t/vca-mute-functionality-feature-request/22446)

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**Author:** [@mca2](https://qa.fmod.com/u/mca2)\
**Replies:** 1\
**Last updated:** [December 23, 2024, 10:13pm UTC](https://qa.fmod.com/t/vca-mute-functionality-feature-request/22446 "2024-12-23T22:13:14Z")

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Are there plans to add mute functionality to Studio::VCA? Studio::VCA::setVolume() allows to set volume to 0 and 1 as a poor man’s mute. But when unmuting with setVolume(1.0f) any previous set volume levels are ignored. …

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## [Updated FMOD API C++ Functions Help](https://qa.fmod.com/t/updated-fmod-api-c-functions-help/22406)

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**Author:** [@branskylar](https://qa.fmod.com/u/branskylar)\
**Replies:** 1\
**Last updated:** [December 19, 2024, 1:31am UTC](https://qa.fmod.com/t/updated-fmod-api-c-functions-help/22406 "2024-12-19T01:31:41Z")

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Hi team, I’m working on building a FMOD API framework for C++ and I found a helpful tutorial to get started, but it appears in recent FMOD updates, there have been certain functions removed/changed. For reference, the t…

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## [What is Why is this "FMOD::supportsLowLatency "log being output](https://qa.fmod.com/t/what-is-why-is-this-fmod-supportslowlatency-log-being-output/22395)

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**Author:** [@chensheng990518](https://qa.fmod.com/u/chensheng990518)\
**Replies:** 1\
**Last updated:** [December 16, 2024, 10:41pm UTC](https://qa.fmod.com/t/what-is-why-is-this-fmod-supportslowlatency-log-being-output/22395 "2024-12-16T22:41:01Z")

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I found in game development that using FMOD to play sound has no effect on some Android phones such as Xiaomi 9. I made sure the system sound was turned on and kept reporting these logs. Is this related to this? Or is th…

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## [FMODex 4.44.45 download](https://qa.fmod.com/t/fmodex-4-44-45-download/22410)

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**Author:** [@BerntA](https://qa.fmod.com/u/BerntA)\
**Replies:** 2\
**Last updated:** [December 15, 2024, 9:30pm UTC](https://qa.fmod.com/t/fmodex-4-44-45-download/22410 "2024-12-15T21:30:16Z")

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Hi! Is it possible to get access to this ancient version of FMOD? Our engine is getting a 64-bit upgrade, but we are missing the 64-bit version of FMODex. :smiley:

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## [C# wrapper on Linux machines](https://qa.fmod.com/t/c-wrapper-on-linux-machines/17106)

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**Author:** [@enf3rno](https://qa.fmod.com/u/enf3rno)\
**Replies:** 3\
**Last updated:** [May 13, 2021, 12:57am UTC](https://qa.fmod.com/t/c-wrapper-on-linux-machines/17106 "2021-05-13T00:57:09Z")

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Hello! I’m working on a C# project to build for Windows and Linux. It builds and runs fine on Windows using the included fmod.cs files and plays music in the program successfully. When I run the built program on a Lin…

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## [getUserData android crash](https://qa.fmod.com/t/getuserdata-android-crash/21139)

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**Author:** [@maksimomelyanchuk](https://qa.fmod.com/u/maksimomelyanchuk)\
**Replies:** 32\
**Last updated:** [December 8, 2024, 9:50pm UTC](https://qa.fmod.com/t/getuserdata-android-crash/21139 "2024-12-08T21:50:04Z")

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Hello, we are currently encountering crashes on Android devices. It appears that these issues are not tied to a specific Android OS version or device. Typically, they occur after the application enters the ‘on pause’ mod…

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## [HTML5 API - "Random" multi instruments always play the same sub-instrument](https://qa.fmod.com/t/html5-api-random-multi-instruments-always-play-the-same-sub-instrument/22351)

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**Author:** [@TheDarkSid3r](https://qa.fmod.com/u/TheDarkSid3r)\
**Replies:** 2\
**Last updated:** [December 5, 2024, 4:23am UTC](https://qa.fmod.com/t/html5-api-random-multi-instruments-always-play-the-same-sub-instrument/22351 "2024-12-05T04:23:59Z")

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HTML5 engine - 2.03.03 I have not tested this in any other engine, but can consistently reproduce it in the JS engine with any project. Steps to reproduce: Create event with multi instrument Add a few unique sub-inst…

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## [HTML5 API - Cannot create sounds from audio table](https://qa.fmod.com/t/html5-api-cannot-create-sounds-from-audio-table/22356)

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**Author:** [@TheDarkSid3r](https://qa.fmod.com/u/TheDarkSid3r)\
**Replies:** 3\
**Last updated:** [December 4, 2024, 12:39am UTC](https://qa.fmod.com/t/html5-api-cannot-create-sounds-from-audio-table/22356 "2024-12-04T00:39:24Z")

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HTML5 engine - 2.03.03 using fmodstudioL.wasm banks loaded via memory I have a simple audio table and an event with a single programmer instrument. I have this code (below) in my CREATE\_PROGRAMMER\_SOUND callback, but …

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## [FMOD in delphi](https://qa.fmod.com/t/fmod-in-delphi/22360)

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**Author:** [@AliHesari](https://qa.fmod.com/u/AliHesari)\
**Replies:** 1\
**Last updated:** [December 2, 2024, 9:02pm UTC](https://qa.fmod.com/t/fmod-in-delphi/22360 "2024-12-02T21:02:22Z")

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I’m a Delphi developer and i want to use fmod with my projects. How can i download it?

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## [When using AAudio on Android, it becomes practically unusable while screen recording](https://qa.fmod.com/t/when-using-aaudio-on-android-it-becomes-practically-unusable-while-screen-recording/22162)

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**Author:** [@cst4you](https://qa.fmod.com/u/cst4you)\
**Replies:** 10\
**Last updated:** [December 1, 2024, 11:26pm UTC](https://qa.fmod.com/t/when-using-aaudio-on-android-it-becomes-practically-unusable-while-screen-recording/22162 "2024-12-01T23:26:38Z")

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FMOD Version: 20302 (144646) Android Version: 14 Reproduction Steps: Start screen recording, capturing the entire screen and device audio. Open the target game/application that uses FMOD. The audio becomes extremely …

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## [Stop a looping sound with play only](https://qa.fmod.com/t/stop-a-looping-sound-with-play-only/22227)

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**Author:** [@mca2](https://qa.fmod.com/u/mca2)\
**Replies:** 4\
**Last updated:** [November 22, 2024, 10:47pm UTC](https://qa.fmod.com/t/stop-a-looping-sound-with-play-only/22227 "2024-11-22T22:47:16Z")

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In the game loop there are several places where sounds are started for game entities. I start these with the usual play/release combination. That works fine for one shots but how about looping sounds? My idea is to stop…

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## [Feature Request : Return status on Find Event by Name](https://qa.fmod.com/t/feature-request-return-status-on-find-event-by-name/22313)

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**Author:** [@GorillaPineapple](https://qa.fmod.com/u/GorillaPineapple)\
**Replies:** 1\
**Last updated:** [November 20, 2024, 11:41pm UTC](https://qa.fmod.com/t/feature-request-return-status-on-find-event-by-name/22313 "2024-11-20T23:41:40Z")

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It would be nice to have a return (A boolean? a ‘not found’ exec pin?) on the Find Event by Name node.

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## [Sound downmixed to mono when playing on a ChannelGroup](https://qa.fmod.com/t/sound-downmixed-to-mono-when-playing-on-a-channelgroup/19437)

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**Author:** [@Bnnoy](https://qa.fmod.com/u/Bnnoy)\
**Replies:** 4\
**Last updated:** [November 19, 2024, 1:47pm UTC](https://qa.fmod.com/t/sound-downmixed-to-mono-when-playing-on-a-channelgroup/19437 "2024-11-19T13:47:56Z")

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Hello! I’ve just hit a weird behavior with a dynamically created/played FMOD::Sound (I need to use Core API because I need to get/setTimelinePosition often and it does not work well with Programmer Sounds) What I do: …

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## [Channel Frequency of 0 not Respected for Streams](https://qa.fmod.com/t/channel-frequency-of-0-not-respected-for-streams/22290)

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**Author:** [@DrNoob](https://qa.fmod.com/u/DrNoob)\
**Replies:** 4\
**Last updated:** [November 18, 2024, 11:25am UTC](https://qa.fmod.com/t/channel-frequency-of-0-not-respected-for-streams/22290 "2024-11-18T11:25:29Z")

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Hi! I continuously manipulate the frequency of a channel through game interaction but for some odd reason when I get close to and eventually precisely to 0 the actual frequency stays at 100. I confirmed that I literall…

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## [Coupling Player Position and Music](https://qa.fmod.com/t/coupling-player-position-and-music/22276)

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**Author:** [@DrNoob](https://qa.fmod.com/u/DrNoob)\
**Replies:** 3\
**Last updated:** [November 18, 2024, 2:43am UTC](https://qa.fmod.com/t/coupling-player-position-and-music/22276 "2024-11-18T02:43:33Z")

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Hi! In my game I want to couple the player’s position to the music, similar to what the game Braid did in one of its worlds. In Braid the player’s x-position was bound to the music in such a way that the music played at…

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## [Debug symbols for fmodstudioL.pdb](https://qa.fmod.com/t/debug-symbols-for-fmodstudiol-pdb/22272)

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**Author:** [@thmasmre](https://qa.fmod.com/u/thmasmre)\
**Replies:** 2\
**Last updated:** [November 7, 2024, 2:30am UTC](https://qa.fmod.com/t/debug-symbols-for-fmodstudiol-pdb/22272 "2024-11-07T02:30:01Z")

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Hello, I want to use c++ debugger on visual studio. FMOD Engine version: 2.02.08.

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## [FMODEx 44464](https://qa.fmod.com/t/fmodex-44464/22259)

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**Author:** [@leo1958](https://qa.fmod.com/u/leo1958)\
**Replies:** 2\
**Last updated:** [November 5, 2024, 8:49am UTC](https://qa.fmod.com/t/fmodex-44464/22259 "2024-11-05T08:49:00Z")

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I know it’s an old version, I’ve made a plugin for a programming language which wraps some of the Fmodex functions. I’m thinking of releasing it. My question is, will the Eula cover this as it’s not commercial or for p…

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## [FMOD\_DSP\_STATE and FMOD\_DSP\_ALLOC Behavior Across Plugin Instances & Systems](https://qa.fmod.com/t/fmod-dsp-state-and-fmod-dsp-alloc-behavior-across-plugin-instances-systems/22245)

<div class="topic-metadata">

**Author:** [@mkmarchan](https://qa.fmod.com/u/mkmarchan)\
**Replies:** 1\
**Last updated:** [November 1, 2024, 12:12am UTC](https://qa.fmod.com/t/fmod-dsp-state-and-fmod-dsp-alloc-behavior-across-plugin-instances-systems/22245 "2024-11-01T00:12:24Z")

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I’m working on an FMOD plugin and trying to make sure that all of our memory allocations / frees are routed through FMOD\_DSP\_ALLOC / FMOD\_DSP\_FREE. Some of the memory that the plugin is allocating is meant to be shared a…

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## [Plug-in Instruments (from RNBO) in Godot: "A requested output, dsp unit type or codec was not available"](https://qa.fmod.com/t/plug-in-instruments-from-rnbo-in-godot-a-requested-output-dsp-unit-type-or-codec-was-not-available/22241)

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**Author:** [@sydastry](https://qa.fmod.com/u/sydastry)\
**Replies:** 2\
**Last updated:** [October 31, 2024, 2:47am UTC](https://qa.fmod.com/t/plug-in-instruments-from-rnbo-in-godot-a-requested-output-dsp-unit-type-or-codec-was-not-available/22241 "2024-10-31T02:47:25Z")

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Hello! I’m trying to use the new RNBO wrapper (following the steps in the linked post) to create a plug-in instrument for our game in Godot. This is working fine in Studio, but once I built and loaded the banks into go…

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