Some build notes for the Choral Generator.
This is quite a big module - 18hp
It's a BBD based triple chorus generator.
It is inspired by the Choral generator in the ARP Omni.
it can be used to process CVs as well as audio.
As is, a signal patched into in 1 will be fed thru all 3 BBDs and arrive at out all, so the 3 BBDs operate in parallel as is done on the ARP Omni. The best effect is to modulate them with a 3 phase signal (I guess I better make one) or signals from a quadrature oscillator such as the NLC Feague.
V3207 - this is a cool audio BBD chip.
You need 3 of these
Its a clone of the MN3207
Description
The V3207 is a 1024-stage low-noise, low-voltage BBD analog delay line that provides analog signal delays of up to
51.2 ms and is particularly suitable for the generation of sound effects (reverb, echo, phaser, flanger, etc.) in audio equipment such as karaoke microphones, guitar effects pedals, etc.
2. Features
• Variable Delay of Audio Signals: 2.56 ms ~ 51.2 ms
• Wide Supply Voltage: 4 ~ 10 V
• Wide Dynamic Range: S/N =73 dB typ.
• Low Distortion: THD =0.4 % typ. (Vi = 0.25 Vrms)
• Clock Frequency Range: 10 kHz ~ 200 kHz
• Package outline: DIL-8 (V3207D)
• ROHS compliant (PB-free)
The V3207 is a 1024-stage low-noise, low-voltage BBD analog delay line that provides analog signal delays of up to
51.2 ms and is particularly suitable for the generation of sound effects (reverb, echo, phaser, flanger, etc.) in audio equipment such as karaoke microphones, guitar effects pedals, etc.
2. Features
• Variable Delay of Audio Signals: 2.56 ms ~ 51.2 ms
• Wide Supply Voltage: 4 ~ 10 V
• Wide Dynamic Range: S/N =73 dB typ.
• Low Distortion: THD =0.4 % typ. (Vi = 0.25 Vrms)
• Clock Frequency Range: 10 kHz ~ 200 kHz
• Package outline: DIL-8 (V3207D)
• ROHS compliant (PB-free)
I decided to buy some MN3207s from ebay.
Are they genuine???
The 13700 op-amp
The three 40106 schmitt triggers
The three Jfets -- MMBFJ309 FET
Voltage regulators
To be continued...
No comments:
Post a Comment