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Beginners • Suggestions on Workflow, Hardware, and Software for Voice Chatbot with Raspberry Pi 5

Hi, I am Roberto, a PHP and JavaScript software developer. I have been exploring the world of Raspberry for a few weeks as I aim to create a voice chatbot by integrating it with my already functional text-based chatbot web application (created with node.js API's chatGPT) currently running on Heroku, to assist the sales staff of a company. I am now planning to extend this chatbot to include a voice-based version, utilizing a Raspberry Pi 5 as the input/output device while delegating all processing operations to the cloud server.

Project Objective

Workflow:

Voice Input: The sales staff speaks a command (e.g., "What are the orders for customer Rossi?").
Role of the Raspberry Pi: The Raspberry Pi records the audio through a microphone, converts it to text, and sends the textual input to the cloud application on Heroku via an API call.

Cloud Processing:

The Heroku server, running on Node.js, processes the command, queries a database, and generates a textual response.
All complex operations, including data processing, are managed by the server, with the Raspberry Pi serving as an intermediary.
Raspberry Pi Output:
The Raspberry Pi receives the response from the cloud, converts it to speech using a text-to-speech library, and plays it through a speaker.
During the voice playback, an LED lights up to indicate that the chatbot is responding.
Hardware:

The system must fit within a 20x20x20 cm case.

Questions:

Is the Raspberry Pi 5 suitable for this type of application?
Which USB microphone and compact speaker would you recommend to ensure good recording and audio output quality in a small space?

Software:

The Raspberry Pi will act solely as an intermediary between the user and the cloud server.

I plan to use Node.js on the Raspberry Pi to:

Send textual input to the Heroku server via API calls.
Receive the processed textual response and convert it to audio using text-to-speech libraries.
I would like confirmation that the Raspberry Pi 5 supports Node.js and recommendations for libraries to use for:

- Speech-to-Text: Converting voice commands into text.
- Text-to-Speech: Generating audio from the received text.

Additional Specifications:

The chatbot responses are brief and generated quickly by the cloud server, so the Raspberry Pi only needs to manage voice input/output and LED control.

I aim to minimize latency and power consumption.

Specific Questions:

Is the Raspberry Pi 5 the best choice for a project where the Pi is only an intermediary, with all processing delegated to the cloud server on Heroku?

Which USB microphones and compact speakers (suitable for a 20x20x20 cm case) would you recommend for achieving good audio quality?

What libraries or tools would you suggest for:

Speech-to-Text: Converting audio into text?

Text-to-Speech: Producing natural-sounding voice output?

What software configuration (OS, libraries, Node.js versions) would you recommend to ensure optimal compatibility and performance on Raspberry Pi 5?

I would like to start with this kit:

https://www.kubii.com/fr/kits-nano-ordi ... #/ram-4_gb

What do you think about it?

Thank you very much for your support!

Any suggestions or advice, whether for hardware or software, will be greatly appreciated.

Thank you Image may be NSFW.
Clik here to view.
8-)

Roberto

Statistics: Posted by DeveloPress — Wed Dec 25, 2024 5:09 pm — Replies 0 — Views 0



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