[App_rpt-users] Audio has no bass...

[Steve Zingman]

As Kevin said, the more on the subject is at 
<http://www.repeater-builder.com/tech-info/flat-audio.html>

Can I call it a good read? Not a beach read. ;)

Steve

On 4/4/2016 9:34 AM, Kevin Custer wrote:
> To add to what Corey suggested, any time I see a post that indicates 
> the repeater as tinny audio, the first thing I suspect is the audio is 
> double - pre-emphasized.
>
> This can happen two ways:
> The audio feeding the transmitter is already pre-emphasized, but the 
> transmitter is doing it again.  Audio placed in to the MIC input will 
> almost always add pre-emphasis to the applied audio. If you are 
> feeding a radio that applies the pre-emphasis as part of the hardware, 
> then don't add pre-emphasis in the configuration file.
>
> It can also happen with some hardware (no necessarily app_rpt) when 
> the receiver audio never gets de-emphasized and that audio is fed to a 
> transmitter that applies pre-emphasis as part of the hardware.
>
> Both of these will result in double pre-emphasis and the audio will 
> sound tinny.
>
> More on this subject is available on RB.
> www.repeater-builder.com
>
> Kevin - W3KKC
>
>
>
>
>
>
>
> On 4/4/2016 9:16 AM, Corey Dean wrote:
>> Did you see this in the usbradio.conf?
>>
>> txprelim = no           ; Audio processing on left output channel: no,yes
>>                         ; no - Audio is not pre-emphasized and limited.
>>                         ; Suitable for use on a microphone input
>>                         ; yes - Audio is pre-emphasized and limited.
>>                         ; Suitable for direct connection to an FM 
>> modulator
>>
>>
>> On Mon, Apr 4, 2016 at 8:46 AM, Bryan Taylor <overnite at me.com 
>> <mailto:overnite at me.com>> wrote:
>>
>>     Curious as to if there are any settings in the dial setup that
>>     would make the sound have more bass, I have 2 nodes using icom
>>     icf-f121
>>     Radios and one using a Motorola gm300 and they all sound fine,
>>     the other node is using an old Marconi Marcom vi and the audio it
>>     transmits back to the repeater  is very tinny... The audio it
>>     sends out over the network is really nice. Just wondering if
>>     there are different settings for different style audio
>>     Thanks
>>     Bryan
>>     Vo1mxz
>>
>
>
>
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-- 
"Anything is possible if you don't know what you are talking about."
1st Law of Logic

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