我們在開發(fā)C#程序時，有時候會需要將報警信息通過語音進行播報，今天跟大家分享一下具體的實現(xiàn)過程。
首先我們創(chuàng)建好一個Windows窗體項目，然后添加System.Speech庫引用。
點擊引用，右擊添加引用，在程序集中，找到System.Speech，這個庫是Windows系統(tǒng)自帶的，所以直接點擊確定即可。
當(dāng)然，我們也可以通過Nuget下載安裝：接下來我們對System.Speech這個庫進行封裝，核心圍繞SpeechSynthesizer這個類。1、創(chuàng)建一個SpeechHelper類，初始化SpeechSynthesizer對象。 private SpeechSynthesizer synthesizer; public int Rate; public int Volume; public SpeechHelper() { synthesizer = new SpeechSynthesizer(); synthesizer.SpeakStarted += Synthesizer_SpeakStarted; synthesizer.SpeakCompleted += Synthesizer_SpeakCompleted; synthesizer.Volume = 100; synthesizer.Rate = 0; }
public bool IsSpeeking { get; set; } = false; private void Synthesizer_SpeakStarted(object sender, SpeakStartedEventArgs e) { IsSpeeking = true; } private void Synthesizer_SpeakCompleted(object sender, SpeakCompletedEventArgs e) { IsSpeeking = false; }
3、開始播報和停止播報方法，這里建議使用異步SpeekAsync。public void Speak(string text){ if (!string.IsNullOrWhiteSpace(text)) { synthesizer.SpeakAsync(text); }}public void Stop(){ synthesizer.SpeakAsyncCancelAll();}
4、編寫調(diào)節(jié)語速和音量的方法。 public void SetVolume(int volume) { if (volume >= 0 && volume <= 100) { synthesizer.Volume = volume; Volume = volume; } } public void SetRate(int rate) { if (rate >= -10 && rate <= 10) { synthesizer.Rate = rate; Rate = rate; } }
public void SelectVoice(string voiceName) { try { synthesizer.SelectVoice(voiceName); } catch (Exception ex) { throw new Exception("無法選擇語音 " + voiceName + ": " + ex.Message); } } public string[] GetInstalledVoices() { List<string> list = new List<string>(); foreach (InstalledVoice installedVoice in synthesizer.GetInstalledVoices()) { list.Add(installedVoice.VoiceInfo.Name); } return list.ToArray(); }
我們對SpeechHelper進行案例應(yīng)用。
1、我們先創(chuàng)建一個簡單的窗體：
2、核心代碼就是創(chuàng)建SpeechHelper對象，調(diào)用Speek進行播報，調(diào)用Stop停止播報：
private SpeechHelper speechHelper = new SpeechHelper(); private void btn_Start_Click(object sender, EventArgs e) { if (!this.speechHelper.IsSpeeking) { this.speechHelper.Speak(this.txt_Content.Text); } } private void btn_Stop_Click(object sender, EventArgs e) { this.speechHelper.Stop(); }
3、然后可以選擇朗讀者或者調(diào)節(jié)音量和語速：
private void FrmMain_Load(object sender, EventArgs e){ this.cmb_Voice.Items.AddRange(speechHelper.GetInstalledVoices());}private void cmb_Voice_SelectedIndexChanged(object sender, EventArgs e){ this.speechHelper.SelectVoice(this.cmb_Voice.Text);}private void track_Volumn_Scroll(object sender, EventArgs e){ this.speechHelper.SetVolume(this.track_Volumn.Value);}private void track_Rate_Scroll(object sender, EventArgs e){ this.speechHelper.SetRate(this.track_Rate.Value);}
4、運行程序，結(jié)果如下所示：
選擇朗讀者，輸入播報內(nèi)容，點擊開始播報即可。
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該文章在 2025/6/24 10:47:21 編輯過
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