html的recorder.js怎么设置录音的采样率为16kHz

小丶_明

调用百度的语音识别接口,但是百度的语音识别接口是要求音频16bit,16kHz,单声道,
在百度查了查按照找到的改了js但是采样率还是没变,各位大佬这个怎么设置采样率

Augus

[] 纯文本查看 复制代码

 function exportWAV(type) {
                            // 默认为16k
                            var desiredSamplingRate = 16000;
                            var buffers = [];
                            for (var channel = 0; channel < numChannels; channel++) {
                                var buffer = mergeBuffers(recBuffers[channel], recLength);
                                // 需要转换采样率
                                if (desiredSamplingRate != sampleRate) {
                                    // 插值去点
                                    buffer = interpolateArray(buffer, desiredSamplingRate, sampleRate);
                                }
                                buffers.push(buffer);
                            }
                            var interleaved = numChannels === 2 ? interleave(buffers[0], buffers[1]) : buffers[0];
                            var dataview = encodeWAV(interleaved, desiredSamplingRate);
                            var audioBlob = new Blob([dataview], {type: type});
                            self.postMessage({command: 'exportWAV', data: audioBlob});
                        }

小丶_明

Augus 发表于 2019-12-19 09:17
[mw_shl_code=JavaScript,true] function exportWAV(type) {
                            // 默认为16k
...

大佬中间的插值去点的方法能否给份代码,之前网上找的然后写了行不通