# General advice on user-friendly process for players to upload audio assets then pipe them through FMOD-powered Unity? **URL:** \ **Category:** Unity\ **Created:** [July 15, 2022, 7:32pm UTC](https://qa.fmod.com/t/general-advice-on-user-friendly-process-for-players-to-upload-audio-assets-then-pipe-them-through-fmod-powered-unity/19005 "2022-07-15T19:32:04Z")\ **Posts on this page:** 1\ **Showing post:** 6
**Author:** ![Connor\_FMOD](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/connor_fmod/32/3685_2.png) [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)\ **Post date:** [July 29, 2022, 6:15am UTC](https://qa.fmod.com/t/general-advice-on-user-friendly-process-for-players-to-upload-audio-assets-then-pipe-them-through-fmod-powered-unity/19005/6 "2022-07-29T06:15:19Z")
Hi, There isn’t much more to take into consideration other than what you have pointed out. Which method you end up using will solely depend on the functionality you want to give the user. Scott’s video is a great resource to get started with, but there are some changes we will want to make ourselves. • Includes required ```auto using FMODUnity; using UnityEngine; using System.Collections; using System.Runtime.InteropServices; using System.Collections.Generic; using System.IO; ``` • Extra functions used > **ERRCHECK()** > > ```auto > /// > /// Use to debug FMOD functions with explanation of what the function was doing with an both success and failed messages > /// > /// > /// > /// > private void ERRCHEK(FMOD.RESULT result, string failed, string success) > { > #if UNITY_EDITOR > if (result.ToString().Length != 0) > { > if (result != FMOD.RESULT.OK) > Debug.Log(failed + " " + result); > else > Debug.Log(success + " " + result); > } > #endif > } > > /// > /// Override of no success message is required > /// > /// > /// > private void ERRCHEK(FMOD.RESULT result, string failed) > { > //Will only call debugs if in editor to save on calls in build > #if UNITY_EDITOR > if (result.ToString().Length != 0) > { > if (result != FMOD.RESULT.OK) > Debug.Log(failed + " " + result); > } > #endif > } > > ``` > **SetState()** > > ```auto > /// > /// Sets the state of the recording > /// > /// Options: Recording, Stopped, Restart > private void SetState(string currentState) > { > switch(currentState) > { > case "Recording": > { > recording = true; > stopped = false; > killed = false; > #if UNITY_EDITOR > Debug.Log("RECORDING"); > #endif > break; > } > case "Stopped": > { > recording = false; > stopped = true; > killed = true; > soundActive = false; > #if UNITY_EDITOR > Debug.Log("STOPPED"); > #endif > break; > } > case "Restart": > { > recording = false; > stopped = false; > killed = false; > soundActive = true; > #if UNITY_EDITOR > Debug.Log("RESTARTING"); > > #endif > break; > } > } > } > > ``` • You will need two systems [Core System](https://fmod.com/docs/2.02/api/studio-api-system.html#studio_system_create), one to record and one to write to a `.wav` file > **Creating Systems** > > ```auto > //System Variables > private FMOD.System micRecordSystem, wavWriterSystem; > private string micRecordData = "MICTEST"; > private string wavWiterData = "WAVWRITER"; > > //Creating systems to record and output mic input ------------------------------------------------------------- > GCHandle micRecordDataPtr = GCHandle.Alloc(micRecordData); > GCHandle wavWriterDataPrt = GCHandle.Alloc(wavWiterData); > > FMOD.RESULT result; > FMOD.OUTPUTTYPE currentOutput; > //Creating the mic system solely for recording mic input > result = FMOD.Factory.System_Create(out micRecordSystem); > ERRCHEK(result, "Failed to create mic sysytem"); > //Initialize mic record system > resusystemcRecordSystem.init(100, FMOD.INITFLAGS.NORMAL, GCHandle.ToIntPtr(micRecordDataPtr)); > ERRCHEK(result, "Mic system int failed"); > //Checking current output for the system > result = micRecordSystem.getOutput(out currentOutput); > ERRCHEK(result, "Failed to check output", "Mic system current ouput " + currentOutput.ToString() + " with result"); > > FMOD.RESULT wavResult; //Just for this snip > //Creating the wav writer system > wavResult= FMOD.Factory.System_Create(out wavWriterSystem); > ERRCHEK(wavResult, "Failed to create wav system"); > //Initialize the wav writer system > wavResult= wavWriterSystem.init(100, FMOD.INITFLAGS.NORMAL, GCHandle.ToIntPtr(wavWriterDataPrt)); > ERRCHEK(wavResult, "Failed to init wav write system"); > > //Assigning output of Wav system to nosound, till we are ready to record sound > wavResult= wavWriterSystem.setOutput(FMOD.OUTPUTTYPE.NOSOUND); > wavWriterSystem.getOutput(out currentOutput); > ERRCHEK(wavResult, "Failed to change wav output", "Wav system current output " + currentOutput.ToString() + " with result "); > //------------------------------------------------------------------------------------------------------------- > > ``` • Because we are creating these systems ourselves, we are responsible for updating and releasing them • Call in `Update()` > **Update systems** > > ```auto > //Updating both the created systems > if (!killed) > { > micRecordSystem.update(); > wavWriterSystem.update(); > } > > ``` > **Release()** > > ```auto > //REMEMBER TO RELEASE SYSTEMS SO THERE ARENT MEMORY LEAKS, this will get called if you stop the Editor running or if the object is destroyed > private void OnDestroy() > { > micRecordSystem.release(); > wavWriterSystem.release(); > } > > ``` • We can follow Scott’s example of how to set up and retrieve the `recordingDevice` from our new `system` • When creating the new `sound` don’t use the `FMODUnity.RuntimeManger.CoreSystem` you will want to you’re your `recordingSystem` • When beginning the recording, input will be recorded on the `recordingSystem`, while the `wavWriterSystem` will only be responsible for outputting the file > **Start Recording** > > ```auto > //START RECORDING---------------------------------------------------------------------------------------------- > if (Input.GetKeyDown(KeyCode.R) && !recording && soundActive) > { > SetState("Recording"); > > FMOD.RESULT result; > > result = micRecordSystem.recordStart(recordingDeviceIndex, sound, true); > ERRCHEK(result, "Failed to start recording"); > > //Playing the sound to the mic record system > result = micRecordSystem.playSound(sound, channelGroup, false, out channel); > ERRCHEK(result, "Failed to play sound on mic system"); > > //Playing the sound on the wav system > result = wavWriterSystem.playSound(sound, channelGroup, false, out wavChannel); > ERRCHEK(result, "Failed to play sound on wav system"); > > //Start wav system writing to file, make sure this only happens once > result = wavWriterSystem.setOutput(FMOD.OUTPUTTYPE.WAVWRITER); > ERRCHEK(result, "Wav system failed to start writing to file", "Wav system now writing to file"); > } > //------------------------------------------------------------------------------------------------------------- > > ``` • When the recording is done, we will need to stop writing to the `.wav` file so it can be used as a source for our `Programmer Sound`. > **Stop Recording** > > ```auto > //STOP RECORDING----------------------------------------------------------------------------------------------- > if (Input.GetKeyDown(KeyCode.S) && !stopped && recording) > { > SetState("Stopped"); > > //Stopping the recording > FMOD.RESULT result = micRecordSystem.recordStop(recordingDeviceIndex); > ERRCHEK(result, "Failed to stop recording on mic system"); > > //Should stop WASAPI starving------------------------------------------------------------------------------ > result = wavChannel.stop(); > ERRCHEK(result, "Failed to stop wav channel"); > > result = channel.stop(); > ERRCHEK(result, "Failed to stop mic channel"); > //--------------------------------------------------------------------------------------------------------- > result = sound.release(); > ERRCHEK(result, "Failed to release sound"); > > //Stop the wav system writing to file > result = wavWriterSystem.setOutput(FMOD.OUTPUTTYPE.NOSOUND); > ERRCHEK(result, "Failed to change wav system output"); > } > //------------------------------------------------------------------------------------------------------------- > > ``` • If you want to do another recording, you will have to recreate the `sound` and delete the `.wav` file so it can’t be created again. > **Recreate Sound** > > ```auto > //RECREATE SOUND----------------------------------------------------------------------------------------------- > if (Input.GetKeyDown(KeyCode.L) && killed && stopped) > { > SetState("Restart"); > > //Only need to recreate the sound > FMOD.RESULT result = micRecordSystem.createSound("Sound", FMOD.MODE.LOOP_NORMAL | FMOD.MODE.OPENUSER, > ref exinfo, out sound); > ERRCHEK(result, "Failed to recreate sound"); > > //Removing old wav so that the new one can be recorded > if (filePath.text.Length != 0) > { > File.Delete(filePath.text); > #if UNITY_EDITOR > Debug.Log("Deleted .wav file"); > #endif > } > } > //------------------------------------------------------------------------------------------------------------- > > ``` I’ll include the entire file. But it’s a good idea to try to set it up yourself so you understand how it works! [RecordMic.txt](https://qa.fmod.com/uploads/short-url/hT8oVFUl1Cn4inof6nWsd07zHDu.txt) (9.4 KB) I have also included how to use programmer sounds [ProgrammerSounds.txt](https://qa.fmod.com/uploads/short-url/we0MRqtROcPPrsiKMSs7GfPcUMD.txt) (3.6 KB) Hope this helps! --- _[View the full topic](https://qa.fmod.com/t/general-advice-on-user-friendly-process-for-players-to-upload-audio-assets-then-pipe-them-through-fmod-powered-unity/19005)._