I am looking for help from anyone who has implemented digital audio
stored in some type of flash and then "playe" out over DAC.
I guess I have 2 questions:
1. how are people storing digital audio files (5-20 seconds 16 bit
encoded)?
2. does anyone have experience (and examples) of taking that stored
(in flash maybe?) audio and putting it out using the DAC?
I appreciate anyone's help in this area.
Del Stevens
digital audio store, digital audio out help
Started by ●March 9, 2007
Reply by ●March 9, 20072007-03-09
A few years ago I had a play with a Softbaugh card that did exactly that.
It had a small mike on board and a small speaker.
I cut off the speaker in order to use the audio ouput with a decent earpiece.
They provided demo software to record and playback.
See: http://www.softbaugh.com/ProductPage.cfm?strPartNo9
You will note that the board I used is obsolete ... but the source code is still there.
Maybe one of their other boards can do the same - check out their site.
Note: You will need good signal levels from the mike, VERY clean circuit board construction and will also need to be very careful when dealing with the signal dynamic range.
----- Original Message -----
From: del_stevens
To: m...
Sent: Friday, March 09, 2007 9:26 PM
Subject: [msp430] digital audio store, digital audio out help
I am looking for help from anyone who has implemented digital audio
stored in some type of flash and then "playe" out over DAC.
I guess I have 2 questions:
1. how are people storing digital audio files (5-20 seconds 16 bit
encoded)?
2. does anyone have experience (and examples) of taking that stored
(in flash maybe?) audio and putting it out using the DAC?
I appreciate anyone's help in this area.
Del Stevens
It had a small mike on board and a small speaker.
I cut off the speaker in order to use the audio ouput with a decent earpiece.
They provided demo software to record and playback.
See: http://www.softbaugh.com/ProductPage.cfm?strPartNo9
You will note that the board I used is obsolete ... but the source code is still there.
Maybe one of their other boards can do the same - check out their site.
Note: You will need good signal levels from the mike, VERY clean circuit board construction and will also need to be very careful when dealing with the signal dynamic range.
----- Original Message -----
From: del_stevens
To: m...
Sent: Friday, March 09, 2007 9:26 PM
Subject: [msp430] digital audio store, digital audio out help
I am looking for help from anyone who has implemented digital audio
stored in some type of flash and then "playe" out over DAC.
I guess I have 2 questions:
1. how are people storing digital audio files (5-20 seconds 16 bit
encoded)?
2. does anyone have experience (and examples) of taking that stored
(in flash maybe?) audio and putting it out using the DAC?
I appreciate anyone's help in this area.
Del Stevens
Reply by ●March 9, 20072007-03-09
--- In m..., "Richard (UK)." wrote:
>
> A few years ago I had a play with a Softbaugh card that did exactly
that.
> It had a small mike on board and a small speaker.
>
> I cut off the speaker in order to use the audio ouput with a decent
earpiece.
>
> They provided demo software to record and playback.
>
> See: http://www.softbaugh.com/ProductPage.cfm?strPartNo9
> You will note that the board I used is obsolete ... but the source
code is still there.
>
> Maybe one of their other boards can do the same - check out their site.
>
> Note: You will need good signal levels from the mike, VERY clean
circuit board construction and will also need to be very careful when
dealing with the signal dynamic range.
>
Very good!! I will use this. Two more questions:
1. with this example is an digital audio text file. What is the best
way to "download" this to the msp430?
2. if I take .wav generated files created from another source and
download them (via question #1), what issues will I have to be
concerned with to "play" that .wav file out the DAC?
Del
>
> ----- Original Message -----
> From: del_stevens
> To: m...
> Sent: Friday, March 09, 2007 9:26 PM
> Subject: [msp430] digital audio store, digital audio out help
> I am looking for help from anyone who has implemented digital audio
> stored in some type of flash and then "playe" out over DAC.
>
> I guess I have 2 questions:
>
> 1. how are people storing digital audio files (5-20 seconds 16 bit
> encoded)?
>
> 2. does anyone have experience (and examples) of taking that stored
> (in flash maybe?) audio and putting it out using the DAC?
>
> I appreciate anyone's help in this area.
>
> Del Stevens
>
>
>
>
>
>
> A few years ago I had a play with a Softbaugh card that did exactly
that.
> It had a small mike on board and a small speaker.
>
> I cut off the speaker in order to use the audio ouput with a decent
earpiece.
>
> They provided demo software to record and playback.
>
> See: http://www.softbaugh.com/ProductPage.cfm?strPartNo9
> You will note that the board I used is obsolete ... but the source
code is still there.
>
> Maybe one of their other boards can do the same - check out their site.
>
> Note: You will need good signal levels from the mike, VERY clean
circuit board construction and will also need to be very careful when
dealing with the signal dynamic range.
>
Very good!! I will use this. Two more questions:
1. with this example is an digital audio text file. What is the best
way to "download" this to the msp430?
2. if I take .wav generated files created from another source and
download them (via question #1), what issues will I have to be
concerned with to "play" that .wav file out the DAC?
Del
>
> ----- Original Message -----
> From: del_stevens
> To: m...
> Sent: Friday, March 09, 2007 9:26 PM
> Subject: [msp430] digital audio store, digital audio out help
> I am looking for help from anyone who has implemented digital audio
> stored in some type of flash and then "playe" out over DAC.
>
> I guess I have 2 questions:
>
> 1. how are people storing digital audio files (5-20 seconds 16 bit
> encoded)?
>
> 2. does anyone have experience (and examples) of taking that stored
> (in flash maybe?) audio and putting it out using the DAC?
>
> I appreciate anyone's help in this area.
>
> Del Stevens
>
>
>
>
>
Reply by ●March 13, 20072007-03-13
hi
i've worked in such application, i use nand memory, however now you can use sd card using spi
it's more easy to use and let you to concentrate in which is really important.
i use msp430f155 in my project.
there are other technics for recording, i read above a btc algorithm, wich could be a more eficient method for storing
"Richard (UK)." wrote:
A few years ago I had a play with a Softbaugh card that did exactly that.
It had a small mike on board and a small speaker.
I cut off the speaker in order to use the audio ouput with a decent earpiece.
They provided demo software to record and playback.
See: http://www.softbaugh.com/ProductPage.cfm?strPartNo9
You will note that the board I used is obsolete ... but the source code is still there.
Maybe one of their other boards can do the same - check out their site.
Note: You will need good signal levels from the mike, VERY clean circuit board construction and will also need to be very careful when dealing with the signal dynamic range.
----- Original Message -----
From: del_stevens
To: m...
Sent: Friday, March 09, 2007 9:26 PM
Subject: [msp430] digital audio store, digital audio out help
I am looking for help from anyone who has implemented digital audio
stored in some type of flash and then "playe" out over DAC.
I guess I have 2 questions:
1. how are people storing digital audio files (5-20 seconds 16 bit
encoded)?
2. does anyone have experience (and examples) of taking that stored
(in flash maybe?) audio and putting it out using the DAC?
I appreciate anyone's help in this area.
Del Stevens
---------------------------------
Bored stiff? Loosen up...
Download and play hundreds of games for free on Yahoo! Games.
i've worked in such application, i use nand memory, however now you can use sd card using spi
it's more easy to use and let you to concentrate in which is really important.
i use msp430f155 in my project.
there are other technics for recording, i read above a btc algorithm, wich could be a more eficient method for storing
"Richard (UK)." wrote:
A few years ago I had a play with a Softbaugh card that did exactly that.
It had a small mike on board and a small speaker.
I cut off the speaker in order to use the audio ouput with a decent earpiece.
They provided demo software to record and playback.
See: http://www.softbaugh.com/ProductPage.cfm?strPartNo9
You will note that the board I used is obsolete ... but the source code is still there.
Maybe one of their other boards can do the same - check out their site.
Note: You will need good signal levels from the mike, VERY clean circuit board construction and will also need to be very careful when dealing with the signal dynamic range.
----- Original Message -----
From: del_stevens
To: m...
Sent: Friday, March 09, 2007 9:26 PM
Subject: [msp430] digital audio store, digital audio out help
I am looking for help from anyone who has implemented digital audio
stored in some type of flash and then "playe" out over DAC.
I guess I have 2 questions:
1. how are people storing digital audio files (5-20 seconds 16 bit
encoded)?
2. does anyone have experience (and examples) of taking that stored
(in flash maybe?) audio and putting it out using the DAC?
I appreciate anyone's help in this area.
Del Stevens
---------------------------------
Bored stiff? Loosen up...
Download and play hundreds of games for free on Yahoo! Games.
