Working on Audio and speaker section using the components listed below

Projects General Guidance
1

Hi everyone, i am working on a product that uses inmp441 as the input and PAM8403 as an amplifier module where i can send the audio through speaker. I am equally using esp32, and Ra-02 LoRa module. i am stuck and i really need help

2

Post your circuit drawing, sketch (code) and data sheets to your devices.

3

INMP441.PDF (472.7 KB)
PAM8403.PDF (199.7 KB)
Ra-02 LoRa datasheet by | SnapMagic Search (snapeda.com)

No circuit diagram yet.
I actually want to build a two-way communication radio. That's the project i am on and i actually don't know how to do voice communication using the mentioned components.

4

LoRa radios are for short text or data messages. Real time voice transmission is not an option.

5

Can the voice be sent in batches?

6

Sure, in short (say, 100 bytes), infrequent batches. It is much more efficient to send text.

7

Running a Text to speech model then transmitting the text would seem smooth and achievable, but it is too expensive

8

On the other hand, you can buy analog, hand held voice radio transceivers very, very cheaply.

9

And license-free!

10

Can you recommend some or one that can do the work efficiently and effectively..

11

What would "the work" be?

Radio laws vary from country to country, so check what voice radio bands are allowed and which radios are available in your country, especially if you want license-free operation.

12

So, what better transceiver can be used to build a two-way communication radio?

13

As you are just developing the project, begin WITHOUT voice communication. Get all the pieces working with just small data messages. When all is well, only then create the voice to digital part and send and receive that with a known good, working communication system.

Don't do the WHOLE thing at once!

14

Currently, my favorite transceiver is this one.

15

Does it mean i can use LoRa afterwards for the voice when all the pieces have been put together?
Please expatiate cos i don't really get you...

16

So, do you mean that this your recommended transceiver can be used to build a two-way communication radio?

17

GET the data communications working to your satisfaction, then add the voice data and send and receive it! Pointless to waste all the time and effort if the communications will not work.

18

I have tried but no outcome.
So, i have decided to use it as a pager...