Sean Meighan

Hardware => General hardware => Topic started by: BobinWV on April 09, 2014, 09:48:39 AM

Title: Audio question
Post by: BobinWV on April 09, 2014, 09:48:39 AM
Connected my FM transmitter to the Falcon Pi to check  how audio sounded in a vehicle.  To my amateur ears it sounded flat.  I know Sean uses a Behringer 302USB prior to the transmitter. Can the Behringer shape the audio enough to make it 'brighter'?



Bob
Title: Re: Audio question
Post by: sean on April 09, 2014, 11:02:56 AM
What fm transmitter? I have an edm. The behringer does have an equalizer.

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Title: Re: Audio question
Post by: BobinWV on April 09, 2014, 12:41:50 PM
Sean I use the EDM xmtr also.  Do you find it to be flat and lacking character?

Bob
Title: Re: Audio question
Post by: mms on April 11, 2014, 06:38:48 AM
There can be several factors for "flat" sounding audio.  The original recording, your car stereo's settings, the transmitter, the volume of the audio going into the transmitter - just to name a few.  Although in this case, I doubt it's the transmitter.  The EDM transmitters have filtering which definitely "clean" up the sound from the Pi.  We did a side by side transmitter test at the last Denver Mini.  My FM02 picks up some interference and the sound is "warbled" from the Pi.  PK (my dad) is working on a solution, but I digress.

EQ'ing may help.  Compression does help.  Filtering the audio to the frequency response of the transmitter will help.

If I may ask, what were you listening to?
Title: Re: Audio question
Post by: BobinWV on April 11, 2014, 07:49:14 AM
Thanks for the response.  I was listening on a multi speaker suv.  I tried tweaking the car tone controls, but was not impressed with the results.  I am using a pair of Altec Lansing  computer speakers (BXR1220) in the computer room and they sound bright and crisp.  I just expected something comparable in the car.

Bob
Title: Re: Audio question
Post by: mms on April 14, 2014, 09:14:33 AM
Is there possible interference from other radio stations?  Are there power lines near by?