Author Topic: Looking for audio recommendations  (Read 204 times)

Offline piman

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Looking for audio recommendations
« on: November 10, 2018, 02:28:08 PM »
Hi Everyone,

So I'm using a pi with GPIO outputs and I'm at a point where I need audio.  I understand I can't use the onboard audio due to GPIO conflicts.  I'm going to transmit it over FM so is there such a thing as a USB FM transmitter or do I need a USB sound card in addition to an FM transmitter?  Either way, can anyone recommend good products to get the job done?

Offline mmais68569

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Re: Looking for audio recommendations
« Reply #1 on: November 10, 2018, 03:03:05 PM »
This is the one that was recommended by a few members. So I bought it & sounds good, just plug it into your Pi or computer audio jack & that is all.
 Mike
https://www.amazon.com/gp/product/B00C91NAEG/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

Offline dennismccreery

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Re: Looking for audio recommendations
« Reply #2 on: November 10, 2018, 03:04:47 PM »

Offline piman

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Re: Looking for audio recommendations
« Reply #3 on: November 10, 2018, 03:44:27 PM »
I use this one, works great:


https://www.ebay.com/p/VASTINT-V-FMT212R-Radio-Transmitter/138296845


Regards,


Dennis

That looks good and it seems to have no need for an audio card but it gets shipped from China and the delivery time to the USA is 1-2 months.  I can't wait that long.  I'll have to see if there is anything similar which can be delivered sooner.

Offline piman

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Re: Looking for audio recommendations
« Reply #4 on: November 10, 2018, 03:45:56 PM »
This is the one that was recommended by a few members. So I bought it & sounds good, just plug it into your Pi or computer audio jack & that is all.
 Mike
https://www.amazon.com/gp/product/B00C91NAEG/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

The audio jack on the pi is disabled when using GPIO pins.  I would have to buy a sound card in addition to this which may be my only option, but we'll see.

Offline andyaz

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Re: Looking for audio recommendations
« Reply #5 on: November 10, 2018, 10:30:46 PM »

Offline Stormyblade

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Offline piman

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Re: Looking for audio recommendations
« Reply #7 on: November 11, 2018, 07:54:52 PM »
Soundblaster Play 3 USB works great for audio. You still need a seperate FM transmitter however.
https://www.amazon.com/DRP-SB173000000-70SB173000000-Sound-Blaster-Play/dp/B06XBZ38ZJ/ref=sr_1_3?ie=UTF8&qid=1541914199&sr=8-3&keywords=sound+blaster+play+3


There's a number of people that have used this transmitter to go with the above:
https://www.ebay.com/itm/DSP-PLL-87-108MHz-Digital-Wireless-Microphone-Stereo-FM-Transmitter-Module-Board/272315699393?hash=item3f6747d0c1:g:LKYAAOSw65FXqEq-:rk:4:pf:0


This device has a USB input, why would I need the sound card as well?  Based on the reviews the device only seems to have a range of 100 feet, do you know if that can that be improved with a good antenna?  Or running the antenna to the edge of the property?

Offline Stormyblade

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Re: Looking for audio recommendations
« Reply #8 on: November 11, 2018, 10:29:36 PM »
Soundblaster Play 3 USB works great for audio. You still need a seperate FM transmitter however.
https://www.amazon.com/DRP-SB173000000-70SB173000000-Sound-Blaster-Play/dp/B06XBZ38ZJ/ref=sr_1_3?ie=UTF8&qid=1541914199&sr=8-3&keywords=sound+blaster+play+3


There's a number of people that have used this transmitter to go with the above:
https://www.ebay.com/itm/DSP-PLL-87-108MHz-Digital-Wireless-Microphone-Stereo-FM-Transmitter-Module-Board/272315699393?hash=item3f6747d0c1:g:LKYAAOSw65FXqEq-:rk:4:pf:0


This device has a USB input, why would I need the sound card as well?  Based on the reviews the device only seems to have a range of 100 feet, do you know if that can that be improved with a good antenna?  Or running the antenna to the edge of the property?

That USB input is for 5VDC power, not for the incoming audio - you use the line in jack for that. It is also strongly recommended to use a power supply that has a choke on it to remove noise on the 5V line. Lastly, most people do not want to transmit over 100 ft  as that can get you into some problems because you are overpowering (potentially) local radio, something the FCC does not like. If you need to go 100+ ft, I have heard the VAST and a good antenna setup are the way to go.

Offline dennismccreery

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Re: Looking for audio recommendations
« Reply #9 on: November 12, 2018, 09:52:55 AM »
That looks good and it seems to have no need for an audio card but it gets shipped from China and the delivery time to the USA is 1-2 months.  I can't wait that long.  I'll have to see if there is anything similar which can be delivered sooner.


Also available here:  http://radiant-holidays.com/radiant_holidays/index.php?main_page=product_info&cPath=4&products_id=70
But looks like it's out of stock ATM, sorry.


Regards,


Dennis the Menace

Offline piman

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Re: Looking for audio recommendations
« Reply #10 on: November 18, 2018, 07:23:09 AM »
Soundblaster Play 3 USB works great for audio. You still need a seperate FM transmitter however.
https://www.amazon.com/DRP-SB173000000-70SB173000000-Sound-Blaster-Play/dp/B06XBZ38ZJ/ref=sr_1_3?ie=UTF8&qid=1541914199&sr=8-3&keywords=sound+blaster+play+3


There's a number of people that have used this transmitter to go with the above:
https://www.ebay.com/itm/DSP-PLL-87-108MHz-Digital-Wireless-Microphone-Stereo-FM-Transmitter-Module-Board/272315699393?hash=item3f6747d0c1:g:LKYAAOSw65FXqEq-:rk:4:pf:0


This device has a USB input, why would I need the sound card as well?  Based on the reviews the device only seems to have a range of 100 feet, do you know if that can that be improved with a good antenna?  Or running the antenna to the edge of the property?

That USB input is for 5VDC power, not for the incoming audio - you use the line in jack for that. It is also strongly recommended to use a power supply that has a choke on it to remove noise on the 5V line. Lastly, most people do not want to transmit over 100 ft  as that can get you into some problems because you are overpowering (potentially) local radio, something the FCC does not like. If you need to go 100+ ft, I have heard the VAST and a good antenna setup are the way to go.

Are you sure it doesn't take USB audio input? Below is what it says in the specs.

Channel: LINE / USB channel (stereo), MIC channel (mono)

Thanks for the advice on the power supply.  I will look into that.

As for the 100ft, I plan to keep the transmitter in my garage which will reduce the range and move the center of transmission further away as well, so if I can get the antenna closer to the edge of my property I should be fine.
« Last Edit: November 18, 2018, 07:30:26 AM by piman »

 

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