first commit

思睿/vocab_audio_tools/generate_vocab_audio.ps1

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+param(
+    [string]$DataJson = "vocab_audio_output\vocab_days.json",
+    [string]$OutDir = "vocab_audio_output\audio",
+    [string]$Voice = "Microsoft Zira Desktop",
+    [int]$Rate = -2,
+    [int]$Volume = 100
+)
+
+$ErrorActionPreference = "Stop"
+
+Add-Type -AssemblyName System.Speech
+
+$data = Get-Content -LiteralPath $DataJson -Encoding UTF8 -Raw | ConvertFrom-Json
+New-Item -ItemType Directory -Force -Path $OutDir | Out-Null
+
+$synth = New-Object System.Speech.Synthesis.SpeechSynthesizer
+$synth.SelectVoice($Voice)
+$synth.Rate = $Rate
+$synth.Volume = $Volume
+
+$format = New-Object System.Speech.AudioFormat.SpeechAudioFormatInfo(
+    16000,
+    [System.Speech.AudioFormat.AudioBitsPerSample]::Sixteen,
+    [System.Speech.AudioFormat.AudioChannel]::Mono
+)
+$breakShort = [TimeSpan]::FromMilliseconds(320)
+$breakLong = [TimeSpan]::FromMilliseconds(640)
+
+foreach ($day in $data.days) {
+    $dayNumber = [int]$day.day
+    $path = Join-Path $OutDir ("Day{0:D2}.wav" -f $dayNumber)
+    $builder = New-Object System.Speech.Synthesis.PromptBuilder(
+        [System.Globalization.CultureInfo]::GetCultureInfo("en-US")
+    )
+
+    foreach ($entry in $day.entries) {
+        $term = ([string]$entry.spoken).Trim()
+        if ([string]::IsNullOrWhiteSpace($term)) {
+            continue
+        }
+        $builder.AppendText($term)
+        $builder.AppendBreak($breakShort)
+        $builder.AppendText($term)
+        $builder.AppendBreak($breakLong)
+    }
+
+    $synth.SetOutputToWaveFile($path, $format)
+    $synth.Speak($builder)
+    $synth.SetOutputToNull()
+    Write-Host ("Day {0:D2}: wrote {1}" -f $dayNumber, $path)
+}
+
+$synth.Dispose()