Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Question about BDTR-2H chip

Status
Not open for further replies.

chenron7

New Member
Hello
smiley.gif
Im trying to understand how does the BDTR-2H chip works.
I understand that there are 3 delay units that make the reverb, but I dont understand how the circuit works, what is that Osc and how the 3 PT2399 are connected to each other. Can anyone help me ?

Thanks!
smiley.gif
 

Attachments

  • bdtr2_schem.JPG
    bdtr2_schem.JPG
    172.3 KB · Views: 123
  • bdtr2_schem.JPG
    bdtr2_schem.JPG
    172.3 KB · Views: 112
The PT2399 chips delay the audio signal.

From **broken link removed**:
The PT2399 is a single chip echo processor IC utilizing
CMOS technology. Which accept analog audio input
signal, a high sample rate ADC transfer the analog
signal into a bit stream then storage to internal 44Kbit
RAM, after processing the bit stream will de-modulate
by DAC and lowpass filter. Overall delay time is
determined by internal VCO clock frequency, and user
can easy to change the VCO frequency by changing
the external resistance. The PT2399 performs low
distortion (THD<0.5%@0.5Vrms) and low noise
(No<-90dBV) characteristic for audio purpose, and pin
arrangement and application circuit are optimized for
easy PCB layout and cost saving advantage.

Briefly, it converts the analog input to a digital stream, stores the stream in random access memory then reads it out some time later and converts it back into an analog signal. This happens continuously as new signal samples overwrite older samples.
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top