ConvertOnline

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1. Convert Online
2. Audio Converters
3. AMR to WMA

{
  "convert": "amr-wma",
  "multiple": true,
  "from": "amr",
  "to": "wma",
  "note": "AMR files are narrowband and mono by design, typically used for voice recordings at 8000 Hz. When converting to WMA, the quality will remain limited by the original AMR source. Bitrate and sample rate can be adjusted for compatibility.",
  "controls": [
    {
      "type": "dropdown",
      "name": "bitrate",
      "label": "Audio Bitrate",
      "options": [
        {
          "label": "32 kbps (Recommended for AMR)",
          "value": "32k"
        },
        {
          "label": "48 kbps",
          "value": "48k"
        },
        {
          "label": "64 kbps",
          "value": "64k"
        },
        {
          "label": "96 kbps",
          "value": "96k"
        },
        {
          "label": "128 kbps",
          "value": "128k"
        }
      ],
      "defaultValue": "64k",
      "desc": "Sets the output bitrate for WMA. Higher bitrates increase file size but won’t improve AMR quality significantly."
    },
    {
      "type": "dropdown",
      "name": "channels",
      "label": "Audio Channels",
      "options": [
        {
          "label": "Mono (1 channel)",
          "value": 1
        },
        {
          "label": "Stereo (2 channels)",
          "value": 2
        }
      ],
      "defaultValue": 1,
      "desc": "AMR is typically mono. You can convert to stereo, but it will duplicate the mono signal across both channels."
    },
    {
      "type": "dropdown",
      "name": "sample_rate",
      "label": "Sample Rate (Hz)",
      "options": [
        {
          "label": "8000 Hz (Original AMR)",
          "value": 8000
        },
        {
          "label": "16000 Hz",
          "value": 16000
        },
        {
          "label": "22050 Hz",
          "value": 22050
        },
        {
          "label": "44100 Hz",
          "value": 44100
        }
      ],
      "defaultValue": 8000,
      "desc": "Sets the number of samples per second. 8000 Hz matches the original AMR quality; higher rates are supported for compatibility."
    }
  ],
  "type": "audio"
}