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JAVA examples

Basic recognition examples

Use gradlew.bat instead of ./gradlew on windows

Run basic (non-streaming) speech recognition example:

$ ./gradlew run --args="recognize -e=MPEG_AUDIO -c=1 -r=16000 -p=../audio/sample_1.mp3"

To disable automatic punctuation and get up to 3 recognition alternatives:

$ ./gradlew run --args="streaming-recognize -e=MPEG_AUDIO -c=1 -r=16000 --max-alternatives=3 --disable-automatic-punctuation=true -p=../audio/sample_1.mp3"

Run streaming speech recognition with interim results:

$ ./gradlew run --args="streaming-recognize -e=MPEG_AUDIO -r=16000 -c=1 --enable-interim-results=true -p=../audio/sample_1.mp3"

Specify longer silence timeout for voice activity detection (you will probably need longer audio to actually see the difference):

$ ./gradlew run --args="streaming-recognize -e=MPEG_AUDIO -r=16000 -c=1 --enable-interim-results=true --silence-duration-threshold=1.2 -p=../audio/sample_1.mp3"

Return just the first recognized utterance and halt (you will probably need longer audio to actually see the difference):

$ ./gradlew run --args="streaming-recognize -e=MPEG_AUDIO -r=16000 -c=1 --enable-interim-results=true --single-utterance=true -p=../audio/sample_1.mp3"

Use audio from microphone

$ ./gradlew run --args="microphone"

Basic synthesis examples

To run basic speech synthesis and save result to wav:

$ ./gradlew run --args="synthesize -t='И мысли тоже тяжелые и медлительные, падают неторопливо и редко одна за другой, точно песчинки в разленившихся песочных часах.' -o=./output_1.wav"

You can also specify alternative stress with 0 sign after a vowel:

$ ./gradlew run --args="synthesize -t='За0мок - замо0к.' -o=./output_2.wav"

Feel free to use arabic numerals and named entities:

$ ./gradlew run --args="synthesize -t='Газета Times, 03 января 2009 года - Канцлер на грани ради второго спасения банков.' -o=./output_3.wav"

Specify voice: alyona, maxim, flirt

$ ./gradlew run --args="synthesize -t='Привет! Меня зовут Алена.' -o=./output_4.wav -v=alyona"

Generate Protobuf and gRPC definitions (optional)

Download and setup path to java-plugin.

In case of API changes (*.proto files in apis directory), you may regenerate Protobuf and gRPC definitions by simply running the following script (no need to re-clone the whole repo):

$ ./generate_protobuf.sh