HearClear |
(Trunking System, Features) |
Selects to enhance audio clarity by applying noise cancellation and / or a companding algorithm to the radio signal. This feature applies for the current Trunking System.
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With companding, the dynamic range of the transmit audio is compressed and then expanded to its original level in the receive audio. Therefore, companding must be enabled on both the transmitting and the receiving radios or distorted audio will result. Since the compression / expansion algorithm is active both on transmit and receive audio, expanding uncompressed audio or compressing audio without subsequently expanding it will both result in unnatural-sounding audio output. The audio path to the dispatcher must also be companded. |
When the System Type field is set to "Type II", and
When the DVRS Hardware Enable field is disabled.
SELECTIONS: |
DEFINITIONS: |
Disabled |
No noise cancelling or companding is applied to the transmit / receive signals. |
Companding Only |
Companding is applied to both the transmit and receive audio. See Important Note. |
Noise Cancellation Only |
Noise cancellation is applied to the receive audio. |
Companding and Noise Cancellation |
Companding is applied to both the transmit and receive audio (see Important Note) and noise cancellation is applied to the receive audio. |
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