Voice Chips

I am trying to find a voice chip that can record a song (not just melody).
Anyone knows where can I find it?
May be there is a company that will record songs on tiny chips, the kind that
can go on greeting cards?

Thanks,

Joe

 

ISD makes these chips:

http://www.winbond-usa.com/products/isd_products/chipcorder/portfolio/

They are quite easy to use.

Leon

 

Yup, but kinda hard to listen to (for music) - what the world needs is
a "better" ISD chip. Regrettably any improvement involves more
complification :-(

cheers
M

 

The "must have" toy for this Xmas is some new kind of Walkman that
apparently digitally stores as many as 10,000 songs! I'd be interested
to know the amount of memory that takes and the quality of the sound.
Somehow I can't imagine it being much good.

 

The ISD chips sold by the hobbyist outlets are usually the low-bandwidth
high-recording-time versions. The higher-fidelity-shorter-recording-time
versions (3.4kHz bandwidth) do a passable job with music, sounding
much better than the low-bandwidth versions but still not as good as a
BCB AM station (which can be 10kHz bandwidth).

If you have a fixed song and a microcontroller with D/A, and a largish
serial EEPROM, 10kHz mono 8-bit ulaw encoded audio (comparable to a
BCB AM broadcast) for 6 seconds will fit in a 128Kbyte
EEPROM. Above that you probably want to look into MP3 decoders, assuming that
the device will play only a pre-encoded MP3 and not have to encode it.

Tim.

 

Portable MP3 player, about twice the size of a car alarm remote control. I
got each of my kids one this year. They plug into a USB port, and the cheap
ones I bought (around $100 each) hold two hours of music.

 

A small hard disk drive. A single CD holds about 100-150 MP3 songs, so
for 10,000 you're looking at around 40G. Last time I went on a long
trip I put all the music I wanted on a couple of CD-Rs and a ~30Hr
instructional program on two more. It took a few tries to RIP the
latter acceptably, the first try I used too much compression even for
voice (irritating artifacts) and the second time I found my Panasonic
portable MP3 player couldn't cope with very large numbers of files so
I had to group them. Still, it beats hauling dozens of original CDs
around and I only had to do it once.

The new portable MP3 CD players use much more efficient chip sets. On
older models, the play time from an NiMH charge was LESS for MP3 files
because of the massive amount of processing required, now it is MORE
since they shut down the motor down most of the time.

Best regards,
Spehro Pefhany

 

No, no, no! MP3 is history. These things sell for the equivalent of
500 bux in your dough - not the same thing at all. Wish I could
remember what they're called... :-|

 

Well the world seems enamoured with MP3, and the quality of that is pure
crap.

Al

 

Well 12 bit PCM froma 16 bit sample, would give great quality, but for
stereo sound you'd need around 88400 16 bit samples per second, stored
as 66300, or 132600bytes per second. Given an average song of 4 minutes,
or 240 seconds, or 31.824Mbytes of memory. Thus without the distorting
compression of MP3 a 1Gb memory card could hold approximately 32 high
quality songs recordings. Now, I don't know who might seriously need to
wander around with 10,000 songs ready to hand (especially shitty quality
songs) but a couple of hours of decent quality sounds good. remove the
PCM and there'd be a little less room, but better quality, probably at
least on a par with CD. So that begs the question why would people WANT
to pay hundrefds of dollars for an MP3 player, when they can get a
memory card for the same money and get better quality?

Al

 

I am afraid most of the responses I got here did not really point to the
solution I was looking for...I was hoping to find a small chip, at the size
that can fit inside a greeting card. The chips I know of can store short
melodies. I want to find one that can hold a short song.

Thanks,
Joe

 

Short melody, short song, short noises; all the same.....
Way back in the early 1980s, there was a program PC Parrott, that
would record voice from the Casette input of the first IBM PCs made
(newer ones dropped that feature); the program could als play back the
recording to the speaker.
For a one bit A-D (the Cassette input) and D-A (the speaker), the
quality was rather decent, especially for voice.