# FMOD Programmer Sound question - emergency!
**URL:** https://qa.fmod.com/t/fmod-programmer-sound-question-emergency/20330
**Category:** Unity
**Created:** [June 20, 2023, 10:45am UTC](https://qa.fmod.com/t/fmod-programmer-sound-question-emergency/20330 "2023-06-20T10:45:19Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@fkkcloud](https://qa.fmod.com/u/fkkcloud)
#### Post date: [June 20, 2023, 10:45am UTC](https://qa.fmod.com/t/fmod-programmer-sound-question-emergency/20330/1 "2023-06-20T10:45:19Z")
Hello, I am trying to find a way to return 0 on those red segment where there is no volume. and returns 1 where it is above volume 0. Is there any way to do that with FMOD Programmer Sound?
I implemented Programmer Sound based on this code - [https://www.fmod.com/docs/2.01/unity/examples-programmer-sounds.html](https://www.fmod.com/docs/2.01/unity/examples-programmer-sounds.html)
Thank you in advance-
---
### Author:  [@fkkcloud](https://qa.fmod.com/u/fkkcloud)
#### Post date: [June 21, 2023, 8:39pm UTC](https://qa.fmod.com/t/fmod-programmer-sound-question-emergency/20330/4 "2023-06-21T20:39:28Z")
bump
---
### Author:  [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)
#### Post date: [June 22, 2023, 4:37am UTC](https://qa.fmod.com/t/fmod-programmer-sound-question-emergency/20330/5 "2023-06-22T04:37:55Z")
Hi,
An option would be utilizing another one of our scripting examples, [Unity Integration | Scripting Examples - DSP Capture](https://fmod.com/docs/2.02/unity/examples-dsp-capture.html), and combining it with the Programmer Sounds example that you are currently using.
The example creates a DSP ([FMOD API | Core API Reference - DSP](https://fmod.com/docs/2.02/api/core-api-dsp.html)) which is attached to the `Master Channel Group` ([FMOD API | Core API Reference - Channel Group](https://fmod.com/docs/2.02/api/core-api-channelgroup.html)). I would suggest attaching it to the events `channel group` for more accurate results.
The value we are checking is the `mDataBuffer[i]`. There are a couple of checks that we can add that will hopefully improve our results:
1. Rather than just checking `mDataBuffer[i]` for `0`, use a threshold that will hopefully filter out any ambient sound that could still be considered silence.
2. Also adding a sensitivity buffer that will check multiple samples in a row for our threshold will help filter out false zero crossover readings.
Hope this helps!
---
### Author:  [@fkkcloud](https://qa.fmod.com/u/fkkcloud)
#### Post date: [June 22, 2023, 8:24am UTC](https://qa.fmod.com/t/fmod-programmer-sound-question-emergency/20330/7 "2023-06-22T08:24:23Z")
Hello there,
So, in order to get a specific event’s volume I assume I need to grab its Group’s ChannelGroup?
So I have group as below - is that my “channel group”?
Then, I copied its path:
which is **“bus:/VO”**.
The, I tried to get
```auto
var bus = RuntimeManager.GetBus("bus:/VO");
if (bus.getChannelGroup(out var channelGroup) == FMOD.RESULT.OK)
{
if (FMODUnity.RuntimeManager.CoreSystem.createDSP(ref desc, out mCaptureDSP) == FMOD.RESULT.OK)
{
if (channelGroup.addDSP(0, mCaptureDSP) != FMOD.RESULT.OK)
{
Debug.Log("FMOD: Unable to add mCaptureDSP to the master channel group");
}
}
else
{
Debug.Log("FMOD: Unable to create a DSP: mCaptureDSP");
}
}
else
{
Debug.Log("FMOD: Unable to create a master channel group: masterCG");
}
```
and it goes to “Debug.Log(“FMOD: Unable to create a master channel group: masterCG”);”…
Then, it showed " ERR\_STUDIO\_NOT\_LOADED" code for the result.
I am using code from here: [https://www.fmod.com/docs/2.01/unity/examples-dsp-capture.html](https://www.fmod.com/docs/2.01/unity/examples-dsp-capture.html)
Please help me.
---
### Author:  [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)
#### Post date: [June 23, 2023, 5:02am UTC](https://qa.fmod.com/t/fmod-programmer-sound-question-emergency/20330/8 "2023-06-23T05:02:57Z")
Hi,
The issue is the `VO` bus’ `channel group` won’t be created until there is an event or sound being played through it.
There are two options, waiting to add the DSP after the event has been played, or forcing the `channel group` to be created before a sound is played on it.
I would suggest loading the `channel group` into memory which will allow you to add the DSP. To do so you will want to call `Bus.lockChannelGroup()` ([FMOD API | Studio API Reference - Bus](https://fmod.com/docs/2.02/api/studio-api-bus.html#studio_bus_lockchannelgroup)), while this will begin the process of loading the `channel group` it will not be immediately, so you can use the function `StudioSystem.flushCommands()` ([FMOD API Studio API Reference - System](https://fmod.com/docs/2.02/api/studio-api-system.html#studio_system_flushcommands)) which will ensure the `channel group` is created.
You will have to remember to call `Bus.unlockChannelGroup()` to allow the `channel group` to be cleaned up with the system closing.
Hope this helps!