# FMOD Engine

**URL:** https://qa.fmod.com/c/fmodapi/6.md?no_subcategories=false&page=15

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**Page:** 16

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## [FMOD linux symlinks](https://qa.fmod.com/t/fmod-linux-symlinks/20738)

<div class="topic-metadata">

**Author:** [@daisyowl](https://qa.fmod.com/u/daisyowl)\
**Replies:** 1\
**Last updated:** [October 12, 2023, 12:43am UTC](https://qa.fmod.com/t/fmod-linux-symlinks/20738 "2023-10-12T00:43:13Z")

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We’re making a linux build of our game, on a windows machine. Everything works great, except that the fmod .so files that are provided have symlinks. Like, fmod.so.13.13 with two symlink aliases called fmod.so.13 and fmo…

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## [FMOD\_ERR\_FORMAT with large WAV file](https://qa.fmod.com/t/fmod-err-format-with-large-wav-file/20719)

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**Author:** [@jossdisguise](https://qa.fmod.com/u/jossdisguise)\
**Replies:** 4\
**Last updated:** [October 5, 2023, 4:09pm UTC](https://qa.fmod.com/t/fmod-err-format-with-large-wav-file/20719 "2023-10-05T16:09:08Z")

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We have a user with a 10 hour WAV file (about 6GB on disk) and createSound returns FMOD\_ERR\_FORMAT. Shorter file (2 hours) seems to work. What are the limitations on WAV files with FMOD?

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## [Sound.lock() returning ERR\_INVALID\_PARAM](https://qa.fmod.com/t/sound-lock-returning-err-invalid-param/20728)

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**Author:** [@ashduino101](https://qa.fmod.com/u/ashduino101)\
**Replies:** 1\
**Last updated:** [October 5, 2023, 1:09am UTC](https://qa.fmod.com/t/sound-lock-returning-err-invalid-param/20728 "2023-10-05T01:09:48Z")

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Hello, I am trying to lock a sound to use the data in some other code (JavaScript/WASM, HTML5 build of FMOD), but the Sound.lock() function always returns 31 (ERR\_INVALID\_PARAM). How do I use this function properly? The…

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## [FMOD\_System\_CreateSound Does not support Chinese directory？](https://qa.fmod.com/t/fmod-system-createsound-does-not-support-chinese-directory/20703)

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**Author:** [@iaiqol](https://qa.fmod.com/u/iaiqol)\
**Replies:** 2\
**Last updated:** [October 2, 2023, 12:38pm UTC](https://qa.fmod.com/t/fmod-system-createsound-does-not-support-chinese-directory/20703 "2023-10-02T12:38:34Z")

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FMOD\_System\_CreateSound(FManager.System, PAnsiChar(FileName), FModMode, @FMOD, @FMp3Sound);

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## [FMOD 20004 crash problems on ios and android](https://qa.fmod.com/t/fmod-20004-crash-problems-on-ios-and-android/20705)

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**Author:** [@RiddleC](https://qa.fmod.com/u/RiddleC)\
**Replies:** 1\
**Last updated:** [September 27, 2023, 11:41pm UTC](https://qa.fmod.com/t/fmod-20004-crash-problems-on-ios-and-android/20705 "2023-09-27T23:41:18Z")

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Hi, Forums! I have a crash problem in ios and android. Our app is build by unity. The crash calling stack as follow: Thread 129 (crashed) 0 libfmod.so!FMOD::ChannelControl::getDSPClock(unsigned long long\*, unsigned…

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## [How to set multi-channel through FMOD？](https://qa.fmod.com/t/how-to-set-multi-channel-through-fmod/20690)

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**Author:** [@xuis49](https://qa.fmod.com/u/xuis49)\
**Replies:** 1\
**Last updated:** [September 26, 2023, 2:34am UTC](https://qa.fmod.com/t/how-to-set-multi-channel-through-fmod/20690 "2023-09-26T02:34:47Z")

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When I played the standby sound through FMOD in the C# program, I found that playing the second standby sound would cause the first standby sound to stop. How should I solve this situation? Can it be solved by setting up…

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## [Detecting Playback Device Change in Windows](https://qa.fmod.com/t/detecting-playback-device-change-in-windows/13579)

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**Author:** [@abyrd](https://qa.fmod.com/u/abyrd)\
**Replies:** 5\
**Last updated:** [September 25, 2023, 12:51am UTC](https://qa.fmod.com/t/detecting-playback-device-change-in-windows/13579 "2023-09-25T00:51:16Z")

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I’m trying to ensure my application changes driver when the user changes the default playback device in Windows. How can I detect when this occurs? It appears the driver order does not change when the default is changed…

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## [Implementing in NetHack - No sound playing](https://qa.fmod.com/t/implementing-in-nethack-no-sound-playing/20681)

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**Author:** [@MrEveryDay](https://qa.fmod.com/u/MrEveryDay)\
**Replies:** 3\
**Last updated:** [September 23, 2023, 8:02pm UTC](https://qa.fmod.com/t/implementing-in-nethack-no-sound-playing/20681 "2023-09-23T20:02:46Z")

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Quick note: I am not a programmer, however when you want a feature bad enough you gotta at least try to do the work yourself I am working on implementing the FMOD Core API into NetHack to replace the barebones win32api …

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## [Playing audio files in XADPCM format](https://qa.fmod.com/t/playing-audio-files-in-xadpcm-format/20636)

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**Author:** [@m.khavro](https://qa.fmod.com/u/m.khavro)\
**Replies:** 5\
**Last updated:** [September 12, 2023, 10:56pm UTC](https://qa.fmod.com/t/playing-audio-files-in-xadpcm-format/20636 "2023-09-12T22:56:15Z")

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Hi, can someone point me in direction of how to handle audio data in XADPCM format? It is a native format on Xbox platforms. Should I first decode it into raw PCM format somehow? Or is there already a dedicated FMOD\_SO…

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## [Get number of channels in a file?](https://qa.fmod.com/t/get-number-of-channels-in-a-file/20618)

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**Author:** [@bLAZER](https://qa.fmod.com/u/bLAZER)\
**Replies:** 1\
**Last updated:** [September 5, 2023, 5:07am UTC](https://qa.fmod.com/t/get-number-of-channels-in-a-file/20618 "2023-09-05T05:07:26Z")

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A simple thing I thought, but I can’t find anything in the docs. How do I get the number of channels in an audio stream, like for example in a loaded .wav, if it’s mono or stereo?

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## [Quietest stealing doesn't seem to work](https://qa.fmod.com/t/quietest-stealing-doesnt-seem-to-work/20608)

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**Author:** [@ahi10](https://qa.fmod.com/u/ahi10)\
**Replies:** 5\
**Last updated:** [September 4, 2023, 12:52am UTC](https://qa.fmod.com/t/quietest-stealing-doesnt-seem-to-work/20608 "2023-09-04T00:52:44Z")

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Hey, I have an audio event that is using Quietest stealing behaviour and has Max Instances set to 3. However when playing the event, it seems that older and definitely quieter instances get prioritized over new instance…

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## [Can I get a static library of the FMOD API?](https://qa.fmod.com/t/can-i-get-a-static-library-of-the-fmod-api/20605)

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**Author:** [@yongs](https://qa.fmod.com/u/yongs)\
**Replies:** 2\
**Last updated:** [September 1, 2023, 8:29am UTC](https://qa.fmod.com/t/can-i-get-a-static-library-of-the-fmod-api/20605 "2023-09-01T08:29:02Z")

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Hi. I want to replace fmod and fmodstudio with static libraries for the security of my project. Where can I download the fmod and fmodstudio static libraries for use on Windows?

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## [FMOD error! (28) from FMOD::System-\>init only on the store distributed build](https://qa.fmod.com/t/fmod-error-28-from-fmod-system-init-only-on-the-store-distributed-build/20598)

<div class="topic-metadata">

**Author:** [@atypicalgames](https://qa.fmod.com/u/atypicalgames)\
**Replies:** 3\
**Last updated:** [August 28, 2023, 1:26pm UTC](https://qa.fmod.com/t/fmod-error-28-from-fmod-system-init-only-on-the-store-distributed-build/20598 "2023-08-28T13:26:11Z")

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Hello, So we’ve needed to update some really old games because of some store compliance issues with Google. We have a couple of games using FMOD and they all worked ok after updating the library and code except one. Th…

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## [Qt application with FMOD audio library crashes on launch on Android](https://qa.fmod.com/t/qt-application-with-fmod-audio-library-crashes-on-launch-on-android/20561)

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**Author:** [@8Observer8](https://qa.fmod.com/u/8Observer8)\
**Replies:** 8\
**Last updated:** [August 25, 2023, 1:47am UTC](https://qa.fmod.com/t/qt-application-with-fmod-audio-library-crashes-on-launch-on-android/20561 "2023-08-25T01:47:51Z")

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Hello. I made an example that works on desktop when I build it to EXE but crashes when I run APK on smartphone. I use 2.02.16 API version, JDK 17, NDK 22, Qt 6.2.4, and Redmi 4x (Android 7) Settings: QT += core g…

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## [Fix tons of warnings about sprintf usage throughout fmod](https://qa.fmod.com/t/fix-tons-of-warnings-about-sprintf-usage-throughout-fmod/20564)

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**Author:** [@thatgamecompany](https://qa.fmod.com/u/thatgamecompany)\
**Replies:** 1\
**Last updated:** [August 21, 2023, 1:18am UTC](https://qa.fmod.com/t/fix-tons-of-warnings-about-sprintf-usage-throughout-fmod/20564 "2023-08-21T01:18:54Z")

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Could fmod please replace unsafe sprintf calls with snprintf? We currently wade through hundreds of these warnings in Xcode 14. Some of the calls don’t even take a size for the string, so those need corrected as well.

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## [Playing raw PCM through a group channel created in FMOD Studio](https://qa.fmod.com/t/playing-raw-pcm-through-a-group-channel-created-in-fmod-studio/20542)

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**Author:** [@zvejvoda](https://qa.fmod.com/u/zvejvoda)\
**Replies:** 3\
**Last updated:** [August 17, 2023, 5:23am UTC](https://qa.fmod.com/t/playing-raw-pcm-through-a-group-channel-created-in-fmod-studio/20542 "2023-08-17T05:23:54Z")

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Hey, I’m working on a project where I run all the sounds through the Fmod Studio. However there is a text-to-speech (TTS) feature that is received from the server in a raw pcm format. I need to run the TTS audio through…

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## [DSP Nodes showing 0 inputs and 0 outputs](https://qa.fmod.com/t/dsp-nodes-showing-0-inputs-and-0-outputs/20509)

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**Author:** [@heavisideresearch](https://qa.fmod.com/u/heavisideresearch)\
**Replies:** 4\
**Last updated:** [August 17, 2023, 4:32am UTC](https://qa.fmod.com/t/dsp-nodes-showing-0-inputs-and-0-outputs/20509 "2023-08-17T04:32:31Z")

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I’m using the Core FMOD API within Unity, but not using the unity integration. When I create a new DSP node, it doesn’t have any input or output channels, even after calling setChannelFormat. I’ve created a minimal examp…

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## [Status of Geometry::addPolygon for HTML5?](https://qa.fmod.com/t/status-of-geometry-addpolygon-for-html5/20456)

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**Author:** [@msub2](https://qa.fmod.com/u/msub2)\
**Replies:** 12\
**Last updated:** [August 16, 2023, 5:02am UTC](https://qa.fmod.com/t/status-of-geometry-addpolygon-for-html5/20456 "2023-08-16T05:02:48Z")

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Has there been any more development in getting geometry-based occlusion working for the web platform? I’m curious what the blocker is for it, as there aren’t any existing solutions for handling audio occlusion on the web…

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## [Mp3 is not playable in FMOD](https://qa.fmod.com/t/mp3-is-not-playable-in-fmod/19417)

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**Author:** [@bLAZER](https://qa.fmod.com/u/bLAZER)\
**Replies:** 4\
**Last updated:** [August 8, 2023, 9:23am UTC](https://qa.fmod.com/t/mp3-is-not-playable-in-fmod/19417 "2023-08-08T09:23:40Z")

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Here’s an mp3 that can’t be played with FMOD 2.02.06. It’s playable on some software and not recognized in others. Is it corrupt or what’s going on?

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## [Connecting DSPs vs connecting ChannelGroups](https://qa.fmod.com/t/connecting-dsps-vs-connecting-channelgroups/20477)

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**Author:** [@heavisideresearch](https://qa.fmod.com/u/heavisideresearch)\
**Replies:** 6\
**Last updated:** [August 8, 2023, 5:40am UTC](https://qa.fmod.com/t/connecting-dsps-vs-connecting-channelgroups/20477 "2023-08-08T05:40:17Z")

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I’m trying to understand the the relationship between channels and DSPs. As far as I understand it: At the lowest level, we’ve got a graph of DSPs some linear groups of them (DSP Chains) are wrapped up in Channels or C…

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## [Fmodex, SDK and examples](https://qa.fmod.com/t/fmodex-sdk-and-examples/20506)

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**Author:** [@RadioDJ1](https://qa.fmod.com/u/RadioDJ1)\
**Replies:** 1\
**Last updated:** [August 7, 2023, 10:34pm UTC](https://qa.fmod.com/t/fmodex-sdk-and-examples/20506 "2023-08-07T22:34:26Z")

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Hi. A long, long time ago I write a software with Fmod. That program was written in Visual Basic 6. In this time you still supported VB6. Now I’m thinking about to rewrite the software. It going to take a lot of tim…

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## [Three EQ with all 0 gains still affects the sound](https://qa.fmod.com/t/three-eq-with-all-0-gains-still-affects-the-sound/16875)

<div class="topic-metadata">

**Author:** [@jiyongman](https://qa.fmod.com/u/jiyongman)\
**Replies:** 6\
**Last updated:** [August 7, 2023, 3:54am UTC](https://qa.fmod.com/t/three-eq-with-all-0-gains-still-affects-the-sound/16875 "2023-08-07T03:54:33Z")

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I thought, just like the FMOD\_DSP\_TYPE\_PARAMEQ and FMOD\_DSP\_TYPE\_MULTIBAND\_EQ, FMOD\_DSP\_TYPE\_THREE\_EQ would also skip audio processing when all gain values are 0. Based on that theory, I came up with an equation for my…

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## [Sound won't switch to new device](https://qa.fmod.com/t/sound-wont-switch-to-new-device/15621)

<div class="topic-metadata">

**Author:** [@rontt](https://qa.fmod.com/u/rontt)\
**Replies:** 19\
**Last updated:** [August 6, 2023, 11:19pm UTC](https://qa.fmod.com/t/sound-wont-switch-to-new-device/15621 "2023-08-06T23:19:03Z")

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I don’t know if this is a FMOD issue or not, but I don’t know where else to look. Once my game starts, if I switch to headphones, or some other source, the audio continues to come out the original source until I quit an…

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## [Callback to capture DSP rendered output audio buffer](https://qa.fmod.com/t/callback-to-capture-dsp-rendered-output-audio-buffer/20458)

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**Author:** [@MiguelDias90](https://qa.fmod.com/u/MiguelDias90)\
**Replies:** 5\
**Last updated:** [August 6, 2023, 11:09pm UTC](https://qa.fmod.com/t/callback-to-capture-dsp-rendered-output-audio-buffer/20458 "2023-08-06T23:09:34Z")

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Hey, guys, I have a code in C++ that regularly updates audio effects implemented in FMOD Studio. I need a callback that gives me access to the FMOD’s DSP, where I get the output audio buffer (PCM) after being processed…

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## [Problem with setting Delay to captured sound via mic](https://qa.fmod.com/t/problem-with-setting-delay-to-captured-sound-via-mic/20479)

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**Author:** [@smougie](https://qa.fmod.com/u/smougie)\
**Replies:** 1\
**Last updated:** [August 2, 2023, 5:57am UTC](https://qa.fmod.com/t/problem-with-setting-delay-to-captured-sound-via-mic/20479 "2023-08-02T05:57:00Z")

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Hello, I’m currently working on capturing sound from microphone (already achieved - ported cpp sample to c#). Now I need to delay this sound playback (or delay captured sound from mic?) by certain amount of time which i…

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## [Is it possiable to be used in Wechat Game?](https://qa.fmod.com/t/is-it-possiable-to-be-used-in-wechat-game/20488)

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**Author:** [@Kenken0615](https://qa.fmod.com/u/Kenken0615)\
**Replies:** 1\
**Last updated:** [August 2, 2023, 5:42am UTC](https://qa.fmod.com/t/is-it-possiable-to-be-used-in-wechat-game/20488 "2023-08-02T05:42:37Z")

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Hello, I am a Wechat Game Dev. I am considering using FMOD in our Wechat Game Project. It is a mini game project such as Tik Tok mini game. Is it possiable to be used in Wechat Game? Any risk?

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## [Bank takes 12+ hours to load](https://qa.fmod.com/t/bank-takes-12-hours-to-load/20484)

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**Author:** [@Robbe](https://qa.fmod.com/u/Robbe)\
**Replies:** 1\
**Last updated:** [August 1, 2023, 3:12am UTC](https://qa.fmod.com/t/bank-takes-12-hours-to-load/20484 "2023-08-01T03:12:15Z")

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I was changing the main menu and intro tracks of project zomboid. I changed the files with the audio i want giving them the same name. But after i clicked ‘build’ it was 9pm. Now its 9 am and its still ‘building fmod ba…

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## [Implementing I3DL2 sounds with FMOD](https://qa.fmod.com/t/implementing-i3dl2-sounds-with-fmod/20449)

<div class="topic-metadata">

**Author:** [@Azulax](https://qa.fmod.com/u/Azulax)\
**Replies:** 4\
**Last updated:** [July 31, 2023, 8:45am UTC](https://qa.fmod.com/t/implementing-i3dl2-sounds-with-fmod/20449 "2023-07-31T08:45:36Z")

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Hi everyone! Lately I’ve been trying to rewrite EAX part of the game sound engine, I’m working on. Code is based on I3DL2 standard and uses EAX effect on top of this base to implement spatial sounds in different environ…

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## [Relationship between \`ChannelControl::set3DAttributes\` and \`FMOD\_DSP\_PAN\_3D\_POSITION\` on a \`Pan\` DSP?](https://qa.fmod.com/t/relationship-between-channelcontrol-set3dattributes-and-fmod-dsp-pan-3d-position-on-a-pan-dsp/20462)

<div class="topic-metadata">

**Author:** [@heavisideresearch](https://qa.fmod.com/u/heavisideresearch)\
**Replies:** 3\
**Last updated:** [July 28, 2023, 2:10am UTC](https://qa.fmod.com/t/relationship-between-channelcontrol-set3dattributes-and-fmod-dsp-pan-3d-position-on-a-pan-dsp/20462 "2023-07-28T02:10:45Z")

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I’m trying to understand the low-level spatialization system, and have a couple questions. The docs say that a Channel or ChannelGroup start out with a Fader DSP. What happens when you call set3DAttributes to place the…

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## [New version for visual studio 2010](https://qa.fmod.com/t/new-version-for-visual-studio-2010/20469)

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**Author:** [@morenori\_soft](https://qa.fmod.com/u/morenori_soft)\
**Replies:** 1\
**Last updated:** [July 28, 2023, 12:00am UTC](https://qa.fmod.com/t/new-version-for-visual-studio-2010/20469 "2023-07-28T00:00:23Z")

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Hi there. long time ago i register our game to indie license by email. now i registered on homepage. we used older version ( yes, fmodex ). recently we want to update to new version. but, i can not find new version f…

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