Author Topic: surround sound decoder (Read 2021 times)

aoinami2003 · « **on:** May 10, 2008, 09:49:55 PM »

hello po sa inyo elecronics enthusiast and gurus... newbie lamang po.. tanong ko lang po baka may alam po kayo na circuit na tinatawag nilang surround processor. pano po ba makagawa ng isang simpleng processor.paano po bang concept nito at maari nyo po ba akong bigyan ng circuit diag? maraming salamat po....

Philippine Electronics Forum · « **on:** May 10, 2008, 09:49:55 PM »

'yus · « **Reply #1 on:** May 10, 2008, 10:08:35 PM »

ano ba ang ginagawa ng surround sound decoder na yan?

Philippine Electronics Forum · « **Reply #1 on:** May 10, 2008, 10:08:35 PM »

'yus · « **Reply #2 on:** May 10, 2008, 10:30:58 PM »

ganito pala yan: (iba ang nasa isip ko.. ahihi

)
Simple Surround Sound Decoder

The Original "Hafler" Surround-Sound Matrix:

The Schematic of an Enhanced Hafler Matrix Decoder:

Philippine Electronics Forum · « **Reply #2 on:** May 10, 2008, 10:30:58 PM »

rdpzycho · « **Reply #3 on:** May 10, 2008, 10:40:01 PM »

nasa phasing coded yung surround sound, mix sa Left at Right.

meron ako dating copies ng opamp decoders (for analog) pero naiwan sa former office. hehe.

Philippine Electronics Forum · « **Reply #3 on:** May 10, 2008, 10:40:01 PM »

DCore · « **Reply #4 on:** August 03, 2008, 04:18:12 AM »

Quote from: aoinami2003 on May 10, 2008, 09:49:55 PM

hello po sa inyo elecronics enthusiast and gurus... newbie lamang po.. tanong ko lang po baka may alam po kayo na circuit na tinatawag nilang surround processor. pano po ba makagawa ng isang simpleng processor.paano po bang concept nito at maari nyo po ba akong bigyan ng circuit diag? maraming salamat po....

Hi, you may try the TDA7442D. I used this in my Project called Digital Tone Control.

This IC is called "Digitally Controlled Surround Processor" - it is simple to generate a Surround Sound on a normal L & R Stereo Speaker.

However, you may need to use a host processor to make this IC work, it need to control it to generate such Surround Sound. Also, this IC is also used a Tonal control for the Bass, Treble and Volume. it is a nice IC

Regarding the concept - I advice you to download the TDA7442D and from the block diagram, makikita muna kung paano mag-produce ng surround sound ang IC - mixing (L+R), differentiate L_R, then passed to the Phase Shifting....

Philippine Electronics Forum · « **Reply #4 on:** August 03, 2008, 04:18:12 AM »

kirk simone · « **Reply #5 on:** August 15, 2008, 09:40:02 PM »

@DCore available naba yan sa local market

Dandy · « **Reply #6 on:** August 15, 2008, 09:52:22 PM »

Quote from: kirk simone on August 15, 2008, 09:40:02 PM

@DCore available naba yan sa local market

Sir, please check this link :

http://www.electronicslab.ph/forum/index.php?topic=3775.0

It used the TDA7442D SGS-Thomson.

Dandy · « **Reply #7 on:** August 15, 2008, 10:06:40 PM »

Ang ginamit dito ay SOP28 package, hindi pa ata available sa local market dito sa pinas, puwede siguro mag-order, I think it will be soon available dito sa pinas in complete Kit version.

Watch it Out!

Note:
This Digital Tone control using TDA7442 digitally controlled surround sound processor is a platform to study and learn Microcontroller Programming of Intel 8051 in Music Reproduction.

Philippine Electronics Forum · « **Reply #7 on:** August 15, 2008, 10:06:40 PM »

Philippine Electronics Forum