Author Topic: About Sound Recognition (Read 146 times)

maximus_prime · « **on:** July 04, 2012, 10:19:13 PM »

Tanong ko lang po kung posible irecognize ang tunog ng sirena ng emergency vehicle using computer.
Requirements:
Realtime
Noisy Environment
As much as possible, matlab program

Thanks po in advance. Badly needed

Philippine Electronics Forum · « **on:** July 04, 2012, 10:19:13 PM »

Gwenda · « **Reply #1 on:** July 04, 2012, 10:26:26 PM »

Yes, of course. You have to capture and isolate that certain sound you want and digitize it. Actually, even an analog signal can be decoded, such as DTMF tones. I have an idea of where you're going with this. But it will be better if you share in this forum what you really need to solve, so Mathlab users can respond.

Philippine Electronics Forum · « **Reply #1 on:** July 04, 2012, 10:26:26 PM »

maximus_prime · « **Reply #2 on:** July 05, 2012, 08:36:06 AM »

Lumakas loob ko dahil inyo. hehe. Salamat po sa reply.

Need ko lang talaga po ng idea kung ano dapat gamiting parameters sa pagdetect nung sound. AFAIK, yung frequency ng sound ng siren ang kelan ko bigyan ng pansin. So need ko ng FFT? tama po ba? at saka ano po yung idea nyo. share

. thanks talaga po

Philippine Electronics Forum · « **Reply #2 on:** July 05, 2012, 08:36:06 AM »

♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫ · « **Reply #3 on:** July 05, 2012, 02:07:49 PM »

eto tone decoder na ic basa lang datasheet papaano ito gumana para magka-ideya kayo papaano ito isulat sa matlab.

http://www.jaycar.com.au/images_uploaded/LM567.PDF

Philippine Electronics Forum · « **Reply #3 on:** July 05, 2012, 02:07:49 PM »

maximus_prime · « **Reply #4 on:** July 05, 2012, 05:18:27 PM »

thanks^

Posible bang wag na gumamit ng IC na yan.
Ang balak ko kasi ay MIC -> SoundCard -> matlab

Philippine Electronics Forum · « **Reply #4 on:** July 05, 2012, 05:18:27 PM »

Gwenda · « **Reply #5 on:** July 05, 2012, 05:40:28 PM »

Quote from: maximus_prime on July 05, 2012, 05:18:27 PM

Posible bang wag na gumamit ng IC na yan.
Ang balak ko kasi ay MIC -> SoundCard -> matlab

Let's wait from users of Matlab. But I think you can do without the LM567 for now if all you need is to plot and analyze the siren on the PC. I have not used Matlab but I have used the LM567 decoder before.

bravokilo · « **Reply #6 on:** July 11, 2012, 12:57:35 PM »

Sa MIC, you get the pattern first like the fingerprint sa pag pasok sa office.(Punching in). When you put your actual, hanapin nya ang corresponding pattern.

BK

maximus_prime · « **Reply #7 on:** August 10, 2012, 12:45:04 PM »

Salamat po sa feedback

Hanggang ngayon, ang onti idea nmin tungkol dito

Baka po pwedeng makahingi ng kahit general na algorithm? hehe. greatly appreciated po kung sakali.

Kahit ibang programming language po.

Salamat po sa mga fifeedback, balang araw sana makatulong rin ako

Philippine Electronics Forum · « **Reply #7 on:** August 10, 2012, 12:45:04 PM »

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