Control of Volume for Memory Stream. How to do it?

[dhionnystrauss]

Dear Prof Schatzmann,
I have a question regarding how to implement the Volume control using the Arduino Audio Tool. I tried to used the Volume Control Section from https://github.com/pschatzmann/arduino-audio-tools/wiki/Volume-Control

1. VolumeStream volume(i2s);
2. // set initial volume
   auto vcfg = volume.defaultConfig();
   vcfg.copyFrom(config);
   //vcfg.allow_boost = true; // activate amplification using linear control
   volume.begin(vcfg); // we need to provide the bits_per_sample and channels
   volume.setVolume(0.3);

I added Volume Control Instructions to the Memory Stream Reader, but still can not Control the Volume.

#include "AudioTools.h"
#include "filemanz.h"
AudioInfo info(22050, 1, 16);
I2SStream i2s; // Output to I2S
MemoryStream musicmanz(Track_3_raw, Track_3_raw_len); // How to incorporate volume control in Memory Stream?
StreamCopy copierm(i2s, musicmanz); // copies sound into i2s
VolumeStream volume(i2s);

void setup(){
Serial.begin(115200);
AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
auto config = i2s.defaultConfig(TX_MODE);
config.copyFrom(info);
i2s.begin(config);
//volume control - set initial volume
auto vcfg= volume.defaultConfig();
vcfg.copyFrom(config);
//vcfg.allow_boost = true;
volume.begin(vcfg); // we need to provide the bits_per_sample and channels
volume.setVolume(0.5);
}

void loop(){
copierm.copy();
}

Could you please help me with the right instructions to Control the Stream Volume Correctly?
Also Could you please help me on how to implement with this Sketch: MemoryStream -> VolumeStream -> copy -> I2SStream to setup the Stream Volume Correctly?
Also I saw this instruction i2s.setVolume(0.5); how can I use it?
Thank you so much Prof Schatzmann. Really appreciate it.
Regards // Schöne Grüβe,
Dhionny Strauss

[pschatzmann]

The following is wrong if you want to use the VolumeStream. You copy the data directoy to i2s, so VolumeStream is not used.
For MemoryStream -> copy -> VolumeStream -> I2SStream you would need to replace:

 StreamCopy copierm(i2s, musicmanz); // copies sound into i2s

it needs to be

 StreamCopy copierm(volume, musicmanz); // copies sound into VolumeStream

This is using the VolumeStream on the output side of the copy.

You can also use it on the input side because this is PCM data to implement the following processing chain: MemoryStream -> VolumeStream -> copy -> I2SStream

 VolumeStream volume(musicmanz);
 StreamCopy copierm(i2s, volume); // copies volume to i2s

As you can see in the examples above, all the components need to be chained up properly!

[dhionnystrauss]

Dear Prof Schatzmann,
Thank you so much. It Worked Out Perfectly! Thank you so much, really Appreciate it.
I keep with some Projects for Arduino, ESP32, and Raspberry Pi. I will contact you when I am required to do so. Thank you so much.
Also wish you a very very successful Friday! Thanks.
Regards,
Schöne Grüβe,
Dhionny Strauss

[dhionnystrauss]

Thank you.