Digiblaster

[Shredder11]

The bit depth will have more of an effect than the frequency, but both together make a huge difference.  The difference between 8-bit and 16-bit at the same frequency for example is huge.  Of course on the CPC both those are much lower, probably 4-bit and 11KHz and some more knowledgeable person will be along with a more definite answer shortly

[Devilmarkus]

JavaCPC's Digiblaster uses 8bit unsigned.
The frequency depends on the used sample.
(I can't tell you the frequency range, Digiblaster can play)

[Leonie]

The bit depth will have more of an effect than the frequency...

Don´t underestimate low samplerates!
16-Bit with a samplerate less than 15 Khz sounds really odd. (let alone 8 Khz or 3 Khz...) 

Of course on the CPC both those are much lower, probably 4-bit and 11KHz...

Yes, samples played via AY-3-8912...
But the Digiblaster offers 8-Bit-Quality, or not?
Is the Digiblaster capable to sound as good as the Amiga´s Paula?


EDIT: @Markus, du hast es bereits erwähnt, also 8-Bit.

[Bryce]

@ Markus: That was quick, I only sent it yesterday. And yes... Oops I forgot to mention, that the one I sent you was one of the original prototypes. It protrudes 3mm further down than the final version, so it hits the desktop a little. You can file off about 1.5mm from the bottom (as far as the lowest PCB track), which might be just enough to avoid the clash with the table, if not, a carefully placed Amstrad Action under the CPC should be enough to put things right

The DigiBlaster is also 8-bit (unsigned), but the sample rate depends on the software being used, I've no idea what Digitracker or the other packages use though. It can easily handle very low frequencies, but the higher end of the frequency scale will depend on the maximum sample rate.

Bryce.

[TFM]

You can send up to 162 kb/second to the Digiblaster.

[Lastic]

Update:

Just like the German National Football Team, I managed 4 at the weekend

And just like the English National Team, I'll be "hitting the post" some time later today

(sorry lads, just had to get that one in )

As you can see from the picture below, the Edge-connector version has a slightly different layout and is also slightly smaller. Those of you who are expecting one, they should arrive some time later this week.

Bryce.

My apologies for bumping this old thread.

As a newbie to the CPC (2024) I am familiar with COVOX on the PC back in the days and as
such was exploring Digitracker.

I found the schematics and would be able to build a version 2 Digiblaster on a perfboard but
thought I might still ask the question before ordering parts if any version 3 Edge-connector
assembled or unassembled PCB's are still available for purchase and shipping to Belgium ?

Thanks and have a nice weekend

Erik/LaSTiC

[Bryce]

Update:

Just like the German National Football Team, I managed 4 at the weekend

And just like the English National Team, I'll be "hitting the post" some time later today

(sorry lads, just had to get that one in )

As you can see from the picture below, the Edge-connector version has a slightly different layout and is also slightly smaller. Those of you who are expecting one, they should arrive some time later this week.

Bryce.

My apologies for bumping this old thread.

As a newbie to the CPC (2024) I am familiar with COVOX on the PC back in the days and as
such was exploring Digitracker.

I found the schematics and would be able to build a version 2 Digiblaster on a perfboard but
thought I might still ask the question before ordering parts if any version 3 Edge-connector
assembled or unassembled PCB's are still available for purchase and shipping to Belgium ?

Thanks and have a nice weekend

Erik/LaSTiC

The PCB's I built way back then... https://www.cpcwiki.eu/index.php/File:DigiBlaster3_Types.jpg were all self produced and only as many as I needed. I'll have a look whether any were left over, but I doubt it. Also, I never made a proper layout for them with Eagle/KiCAD etc, so unfortunately I don't have files to have any made either.

Bryce.

[Benedikt]

I found the schematics and would be able to build a version 2 Digiblaster on a perfboard but
thought I might still ask the question before ordering parts if any version 3 Edge-connector
assembled or unassembled PCB's are still available for purchase and shipping to Belgium ?

If you want to build a Digiblaster yourself without much hassle, the right choice of components is key:
An integrated SIL R2R resistor network like the 4610X-R2R-104LF by Bourns makes the task almost trivial.
A very similar component was used in the original Covox Speech Thing.

[Lastic]

I found the schematics and would be able to build a version 2 Digiblaster on a perfboard but
thought I might still ask the question before ordering parts if any version 3 Edge-connector
assembled or unassembled PCB's are still available for purchase and shipping to Belgium ?

If you want to build a Digiblaster yourself without much hassle, the right choice of components is key:
An integrated SIL R2R resistor network like the 4610X-R2R-104LF by Bourns makes the task almost trivial.
A very similar component was used in the original Covox Speech Thing.

As good as that sounds, I would not have a clue on how to use that component to build it on a breadboard.
Are there any schematics around using this component ?

[Benedikt]

As good as that sounds, I would not have a clue on how to use that component to build it on a breadboard.
Are there any schematics around using this component ?

You would basically build a CPC version of the FTL Sound Adapter minus the redundant joystick port.
The output has characteristics suitable for active speaker boxes or common audio amplifiers.
The filter capacitor is optional.

(I built replicas a couple of years ago.)