100 lines
3.3 KiB
C#
100 lines
3.3 KiB
C#
// Copyright (c) 2024 Xiaomi Corporation
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//
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// This file shows how to do keyword spotting with sherpa-onnx.
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//
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// 1. Download a model from
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// https://github.com/k2-fsa/sherpa-onnx/releases/tag/kws-models
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//
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// wget https://github.com/k2-fsa/sherpa-onnx/releases/download/kws-models/sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01.tar.bz2
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// tar xvf sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01.tar.bz2
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//
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// 2. Now run it
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//
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// dotnet run
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using SherpaOnnx;
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using System.Collections.Generic;
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using System;
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class KeywordSpotterDemo
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{
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static void Main(string[] args)
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{
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var config = new KeywordSpotterConfig();
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config.FeatConfig.SampleRate = 16000;
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config.FeatConfig.FeatureDim = 80;
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config.ModelConfig.Transducer.Encoder = "./sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01/encoder-epoch-12-avg-2-chunk-16-left-64.onnx";
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config.ModelConfig.Transducer.Decoder = "./sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01/decoder-epoch-12-avg-2-chunk-16-left-64.onnx";
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config.ModelConfig.Transducer.Joiner = "./sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01/joiner-epoch-12-avg-2-chunk-16-left-64.onnx";
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config.ModelConfig.Tokens = "./sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01/tokens.txt";
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config.ModelConfig.Provider = "cpu";
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config.ModelConfig.NumThreads = 1;
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config.ModelConfig.Debug = 1;
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config.KeywordsFile = "./sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01/test_wavs/test_keywords.txt";
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var kws = new KeywordSpotter(config);
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var filename = "./sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01/test_wavs/3.wav";
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WaveReader waveReader = new WaveReader(filename);
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Console.WriteLine("----------Use pre-defined keywords----------");
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OnlineStream s = kws.CreateStream();
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s.AcceptWaveform(waveReader.SampleRate, waveReader.Samples);
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float[] tailPadding = new float[(int)(waveReader.SampleRate * 0.3)];
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s.AcceptWaveform(waveReader.SampleRate, tailPadding);
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s.InputFinished();
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while (kws.IsReady(s))
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{
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kws.Decode(s);
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var result = kws.GetResult(s);
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if (result.Keyword != "")
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{
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Console.WriteLine("Detected: {0}", result.Keyword);
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}
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}
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Console.WriteLine("----------Use pre-defined keywords + add a new keyword----------");
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s = kws.CreateStream("y ǎn y uán @演员");
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s.AcceptWaveform(waveReader.SampleRate, waveReader.Samples);
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s.AcceptWaveform(waveReader.SampleRate, tailPadding);
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s.InputFinished();
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while (kws.IsReady(s))
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{
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kws.Decode(s);
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var result = kws.GetResult(s);
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if (result.Keyword != "")
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{
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Console.WriteLine("Detected: {0}", result.Keyword);
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}
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}
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Console.WriteLine("----------Use pre-defined keywords + add 2 new keywords----------");
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// Note keywords are separated by /
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s = kws.CreateStream("y ǎn y uán @演员/zh ī m íng @知名");
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s.AcceptWaveform(waveReader.SampleRate, waveReader.Samples);
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s.AcceptWaveform(waveReader.SampleRate, tailPadding);
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s.InputFinished();
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while (kws.IsReady(s))
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{
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kws.Decode(s);
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var result = kws.GetResult(s);
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if (result.Keyword != "")
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{
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Console.WriteLine("Detected: {0}", result.Keyword);
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}
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}
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}
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}
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