Skipping and Jumping Speech

[eroboticdude]

Hello, I am experimenting with this library, and using a i2s dac and the default test example on a esp32-s2 is skipping and jumping around, as well as being quite sped up. here is my code:

#include "AudioTools.h" // https://github.com/pschatzmann/arduino-audio-tools
//#include "AudioLibs/AudioKit.h" // https://github.com/pschatzmann/arduino-audiokit
#include "FileSystems.h" // https://github.com/pschatzmann/arduino-posix-fs
#include "espeak.h"

I2SStream i2s; // or replace with AudioKitStream for AudioKit
ESpeak espeak(i2s);

void setup() {
  Serial.begin(115200);
  //file_systems::FSLogger.begin(file_systems::FSInfo, Serial); 
  // add voice option
  heap_caps_malloc_extmem_enable(1000000);
  espeak.add("/mem/data/voices/!v/announcer", espeak_ng_data_voices__v_announcer, espeak_ng_data_voices__v_announcer_len);

  // setup espeak
  espeak.begin();
  // Set voice and voice option
  espeak.setVoice("en+announcer");

  // setup output
  audio_info espeak_info = espeak_get_audio_info();
  auto cfg = i2s.defaultConfig(TX_MODE);
  cfg.channels = 2; //espeak_info.channels; // 1
  cfg.sample_rate = 14000;//espeak_info.sample_rate; // 22050
  cfg.bits_per_sample = espeak_info.bits_per_sample; // 16
  cfg.pin_bck = 18;
  cfg.pin_ws = 33;
  cfg.pin_data = 16;
  i2s.begin(cfg);

}
String line;

void loop() {
  if (Serial.available() > 0) {
    line = Serial.readStringUntil('\n');
      Serial.println(line);
      espeak.say(line.c_str());
    }
  }

[eroboticdude]

note that I tested it with the voice set to alicia ( the default)

[eroboticdude]

How do I properly change the voice? The documentation is very hard to grasp. I assumed I should just change the text but this does not seem to work.

[pschatzmann]

I can't really add anything on top of what's already in the wiki: It's a two stop process: first you need to make the configuration files available (with add) before you can set the voice

[eroboticdude]

Thanks, I've been figuring this out. It turns out when you set the output to 2 channels, the result is the sped up behavior. For voices, the announcer voice which I would like to try is broken, and it seems it can only pronounce "k" and "t" sounds. otherwise, everything is working better after switching to single channel.

[pschatzmann]

Yes, I can confirm that espeak is generating a mono signal.

I didn't really have a close look into voices and maybe it is the easiest to check this out on the desktop to figure out what combinations are working...

[eroboticdude]

issues were most likely caused by the pre-release version of the ESP32-S2 drivers 3.0.0-2