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speaker test and review thread

spaeker raspberry pi TTS vigibot

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#1 firened

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Posté 30 août 2020 - 10:03

post your results here of all the speakers you've tested for a raspberry pi. 

simply post a photo or/and link, and say how good or bad the audio quality is. 

i find it difficult to find a small, easy to install speaker for my robots that has good audio quality so people understand the Text-To-Speech. but this thread is not limited to robots' TTS, and may be helpful for other applications too! 

so far i see these different methods of using a speaker on raspberry pi: 

  • 3.5mm speaker without amp (psa: usually too quiet) 
  • 3.5mm speaker with amp, maybe battery too 
  • a product with amplifier & speaker together 
  • separate amplifier & separate speaker 
  • bluetooth speaker, maybe with battery


#2 firened

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Posté 30 août 2020 - 10:35

groove speaker 

very small speaker. audio quality is very quiet, about the volume of small headphones, any louder causes significant clipping. maybe using a bigger speaker with this board could improve the volume. 

https://a.aliexpress.com/_B1xPoY
IMG_20200813_163653.jpg

 

X-mini brand speaker 

pretty large speaker. audio quality is great. volume can be adjusted precisely. that's my favorite speaker so far. 

IMG_20200830_141047.jpg

 

hamburger speaker 

pretty large speaker. audio quality and volume is pretty good.  

https://a.aliexpress.com/_BOjDTQ

IMG_20200830_120600.jpg

 

3.5mm plug speaker

pretty large speaker. audio quality and volume is okay. requires 2x AAA batteries with 5 days runtime or maybe dummy AAAs connected to 3.3V could work.

https://a.aliexpress.com/_BTEm8G

Screenshot_20200830_113454.jpg


Modifié par firened, 30 août 2020 - 04:48 .


#3 firened

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Posté 30 août 2020 - 04:59

smartphone speaker without amplifier

way too quiet.

IMG_20200626_201022.jpg

 

filterless PAM8403 with plastic 0.25W speaker

sounds very bad. it probably sounds bad because of the crappy plastic speaker. other people had success with the PAM8403 module.

IMG_20200626_195933.jpg



#4 Mike118

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Posté 30 août 2020 - 11:35

One well working solution : 

Speaker : https://www.robot-ma...leur-d-421.html
mini-haut-parleur-d.jpg

Combined with amplifier : https://www.robot-ma...dio-5v-420.html
amplificateur-audio-5v.jpg

 

Use the 5V GND from the pi to power the amplifier board on the 5V + - 
Connect  a jack connector to the L Neutre R pads.
Connect speaker(s) to the L and / or R Out pads.


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#5 firened

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Posté 04 octobre 2020 - 10:21

bluetooth speakers

unfortunately I can't configure the bluetooth speakers correctly on rasbian. it's a shame as they are the perfect size with loud volume for a minus sized robot. 

there are different audio profiles when using bluetooth devices. "SCO" is low quality voice which makes it hard to understand the TTS, unfortunately i haven't figured out how to switch to the "A2DP" high quality profile. if anyone has success, let me know. 

for future reference: after pairing, the audio output inside CMDTTS can be set like this:

mpg123 -a bluealsa:DEV=46:99:9A:36:18:65,PROFILE=sco /tmp/tts_1.mp3

it also cuts off the start of audio when waking the speakers from sleep, i do not know whether that would still happen with A2DP or not. 

https://a.aliexpress.com/_mPmLmvh  

https://a.aliexpress.com/_mOfVgIb 

https://a.aliexpress.com/_m0KI9Fp 

IMG_20201004_110019.jpg





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