Stereo delay

[arash1414]

When the feedback POT is closed., it has only one audio output channel ... mono ... you try too

[potul]

This is normal

when the feedback pot is at minimum, it's not a PING PONG delay anymore as there is only one repetition, it's a PING only. You are missing the PONG on the other channel.

In other words... what would be your expectation?

[arash1414]

If the feedback is closed, at least once in two channels to set the time .. Delay is heard and not repeated .... This is very good for the program to become professional .... Is it possible ..... Again from your attention And thank you for your time

[potul]

Ok,

I just checked in one ping pong delay, and I saw with the feedback at 0, it does 2 repeats (Left-right)

Give this a try. I think it should work but I haven't tested it.

Code: Select all

; ping_pong.spcd
; Patch saved from SpinCAD Designer version 998
; Pot 0: Delay time
; Pot 1: Feedback
; Pot 2: N/A
; 
; 
; ----------------------------
;------ Input
;------ Pot 0
;------ Smoother
RDAX POT0,1.0000000000
RDFX REG0,0.0004493992
WRAX REG0,0.0000000000
;------ Feedback Output
;------ Pot 1
;------ Feedback Output
;------ Mixer 2:1
RDAX ADCL,0.5
RDAX ADCR,0.5
WRAX REG3,0.0000000000
;------ Mixer 2:1
RDAX REG3,1.0000000000
WRAX REG4,0.0000000000
RDAX REG2,1.0000000000
MULX POT1
RDAX REG4,1.0000000000
WRAX REG4,0.0000000000
;------ Coarse Delay
RDAX REG4,1.0000000000
WRA 0,0.0
CLR
OR $007FFF00
MULX REG0
SOF 0.4949951172,0.0000305176
WRAX ADDR_PTR,0.0000000000
RMPA 1.0
WRAX REG5,0.0000000000
;------ FB In 1
RDAX REG5,0.9500000000
WRAX REG1,0.0000000000
;------ Mixer 2:1
RDAX REG1,1.0000000000
;MULX POT1
WRAX REG6,0.0000000000
;------ Coarse Delay
RDAX REG6,1.0000000000
WRA 16221,0.0
CLR
OR $007FFF00
MULX REG0
SOF 0.4949951172,0.4950256348
WRAX ADDR_PTR,0.0000000000
RMPA 1.0
WRAX REG7,0.0000000000
;------ Mixer 2:1
RDAX REG3,0
RDAX REG7,1
WRAX REG8,0.0000000000
;------ FB In 2
RDAX REG7,0.9300000000
WRAX REG2,0.0000000000
;------ Mixer 2:1
RDAX REG3,0
RDAX REG5,1
WRAX REG9,0.0000000000
;------ Output
RDAX REG9,1.0000000000
WRAX DACL,0.0000000000
RDAX REG8,1.0000000000
WRAX DACR,0.0000000000

[potul]

So?

Did this solve the issue or not?

[arash1414]

Hello ..... Yes, this program is the best of all .... Is it possible to increase the delay time internally with codes ..... Thank you

[potul]

The problem with the ping pong delay is that you need 2 delay lines (one for each channel). That's why you get only half of the delay time. So, without complicating much things, you can't go passed 500ms.

[arash1414]

Is it possible to have a higher delay with an external oscillator .... of course with acceptable quality ... I have not tried it yet ...

[potul]

Yes. If you reduce the clock speed you are reducing sampling rate and increasing maximum delay.

[arash1414]

Should the oscillator be a square output or another wave?

[potul]

I suppose square. Just look at the datasheet