diff --git a/adapters/qq/src/message.ts b/adapters/qq/src/message.ts
index d1018501..bcb3ddfe 100644
--- a/adapters/qq/src/message.ts
+++ b/adapters/qq/src/message.ts
@@ -411,33 +411,21 @@ export class QQMessageEncoder<C extends Context = Context> extends MessageEncode
       } else {
         const silk = this.bot.ctx.get('silk')
         if (!silk) return this.bot.logger.warn('missing silk service, cannot send non-silk audio')
-        if (silk.isWav(data)) {
-          let result: Dict
-          const allowSampleRate = [8000, 12000, 16000, 24000, 32000, 44100, 48000]
-          const { fmt } = silk.getWavFileInfo(data)
-          if (!allowSampleRate.includes(fmt.sampleRate)) {
-            if (!this.bot.ctx.get('ffmpeg')) return this.bot.logger.warn('missing ffmpeg service, cannot send some audio')
-            const wavBuf = await this.bot.ctx.get('ffmpeg')
-              .builder()
-              .input(Buffer.from(data))
-              .outputOption('-ar', '24000', '-ac', '1', '-f', 's16le')
-              .run('buffer')
-            result = await silk.encode(wavBuf, 24000)
-          } else {
-            result = await silk.encode(data, 0)
-          }
+        const allowSampleRate = [8000, 12000, 16000, 24000, 32000, 44100, 48000]
+        if (silk.isWav(data) && allowSampleRate.includes(silk.getWavFileInfo(data).fmt.sampleRate)) {
+          const result = await silk.encode(data, 0)
           const onlineFile = await this.sendFile(type, {
             src: `data:audio/amr;base64,` + Buffer.from(result.data).toString('base64'),
           })
           if (onlineFile) this.attachedFile = onlineFile
         } else {
-          if (!this.bot.ctx.get('ffmpeg')) return this.bot.logger.warn('missing ffmpeg service, cannot send non-silk audio except wav')
-          const wavBuf = await this.bot.ctx.get('ffmpeg')
+          if (!this.bot.ctx.get('ffmpeg')) return this.bot.logger.warn('missing ffmpeg service, cannot send non-silk audio except some wav')
+          const pcmBuf = await this.bot.ctx.get('ffmpeg')
             .builder()
             .input(Buffer.from(data))
             .outputOption('-ar', '24000', '-ac', '1', '-f', 's16le')
             .run('buffer')
-          const result = await silk.encode(wavBuf, 24000)
+          const result = await silk.encode(pcmBuf, 24000)
           const onlineFile = await this.sendFile(type, {
             src: `data:audio/amr;base64,` + Buffer.from(result.data).toString('base64'),
           })