           this.addLog("录音已启动（PCM采样）");
                    return true;
                } catch (error) {
                    this.addLog(`录音启动失败: ${error}`);
                    return false;
                }
            }

            stop() {
                if (!this.isRecording) return;

                this.isRecording = false;
                this.addLog("录音已停止");

                if (this.processor) {
                    this.processor.disconnect();
        