Home Audio Convertor PCM to M4A

PCM to M4A

Free Online PCM to M4A Converter – Batch Convert, Cut, and Compress Videos, Audio & Images

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This tool converts PCM to M4A completely free and without any functional limitations. Since it is based on the browser API, the processing speed is the fastest because all files are processed locally on your device and are not uploaded to our server.
About PCM files
PCM (Pulse Code Modulation) is the standard digital audio format that represents sound waves as numerical values. It's uncompressed, maintaining perfect audio quality but creating large file sizes. PCM serves as the basis for formats like WAV and CD audio, widely used in professional recording and broadcasting. Though not space-efficient, its lossless nature makes it ideal for high-fidelity audio applications where quality preservation is crucial.
About M4A files
M4A (MPEG-4 Audio) is a high-quality audio format developed by Apple, based on the AAC (Advanced Audio Coding) standard. It offers better sound compression than MP3 while maintaining excellent audio quality, making it ideal for music and podcasts. M4A files are often used in iTunes and Apple devices, supporting lossy compression with smaller file sizes than MP3 at similar quality levels. Though less universal than MP3, it is widely supported on modern devices and media players.

Free Batch Online Convert PCM to M4A

With the SoConvert tool, you can batch convert PCM files to M4A format for free directly in your browser. During the conversion process, you can adjust the audio bitrate.

Before converting, please set the Sample rate and Audio Channels for PCM in Options; otherwise, the audio from the source file may not be converted correctly.

Click Options in the top-right corner to open the settings panel and customize the M4A audio bitrate.

Other settings explained:

  1. Sample Rate: The sample rate setting of the source PCM. Common settings include:

    • Voice / Recognition: 16000 Hz

    • Music / MP3 / WAV: 44100 Hz

    • Extract audio from video: 48000 Hz

  2. Audio Channels: The number of channels of the source PCM. Common settings include:

    • 1 : Mono (single channel), voice, telephone

    • 2 : Stereo, music, video

    • 6 : 5.1 surround sound, movies

    • 8 : 7.1 surround sound, high-end home theater

  3. Encoding Speed: Select the encoding speed. The faster the speed, the larger the file size.

  4. Audio Bitrate: Recommended range: 8–320 Kbps

  5. Audio Trimming: Set the start and end time using the HH:MM:SS format. For example: from 00:00:05 to 00:00:08 will extract a 3-second audio clip.

Before conversion, you can choose a local folder to save the M4A files. After the PCM files are successfully converted, they will be automatically saved to the selected directory without any manual action.

Save All: After all files have been converted, click Save All to export all M4A files at once.