Synth Tech e520 Hyperion Stereo Audio Processor

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Daisuk
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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by Daisuk » Sat Mar 27, 2021 2:39 pm

paults wrote:
Sat Mar 27, 2021 2:32 pm
You can chain 2 effects now
Whaaat! Damn. That is fiiirrrre. Fuck yes, awesome. :yay:
Can you save stacked fx as presets as well?

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by drxcm » Sat Mar 27, 2021 3:08 pm

WHHATTTT? You can chain two effects??!

edit -- ah, mono in.. slightly less excited but still :sb:

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Sat Mar 27, 2021 3:12 pm

[Found most of the answers posed in this post elsewhere.]
Last edited by studio460 on Mon Mar 29, 2021 4:26 am, edited 7 times in total.
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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Sat Mar 27, 2021 5:01 pm

Okay, I re-read the manual and found an earlier DivKid demo using an E520 prototype where time-stretch is explicitly seen, where the left soft-knob labeled "time factor" may be dialed-down to 0.01x (which Paul also confirmed earlier in the thread).

The SynthTech audio demo of the Spectral Time Machine (time-stretch) sounds very clean on slowed-playback. Though it would be interesting to compare the E520's time-stretch fidelity to those of the Nebulae v2's, ER-301's, and Beads' (though, Beads requires an external-LFO). However, since the E520 has the most capable processor and the most RAM, I suspect the E520 to possess the best technical advantage in this application. By the way, the E520's Spectral Dronemaker demos are very impressive—seems a perfect pairing for my E352. A few questions:

• Deflector Shield: The E520's version appears to have more parameters than the E560 [correct].
• Time-stretch algorithm: Phase-vocoding or granular-based, or a combination of both?
• TImeline-scrub: Personal request for future firmware!
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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by paults » Mon Mar 29, 2021 3:54 pm

The time-stretch uses a phase vocoder.

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by paults » Mon Mar 29, 2021 4:00 pm

Can you save stacked fx as presets as well?
Well, I am assuming "stacked" means effects in parallel which we cannot do.

If you are referring to our CHAINED mode, then yes. You can save that as a user preset.

For those wondering, this mode lets you assign different effects to Left and Right.
If you feed a Mono into (Left), the Left Out is routed to Right In.

If you feed in 2 inputs (Left and Right), the chain 'breaks' and you simply can have different effects applied to each
signal. This can sound pretty awesome, actually.

Note that the algorithms in this mode have restricted Parameter CV controls, because instead of 4 per algorithm, you have 2.

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by Daisuk » Mon Mar 29, 2021 4:17 pm

paults wrote:
Mon Mar 29, 2021 4:00 pm
Can you save stacked fx as presets as well?
Well, I am assuming "stacked" means effects in parallel which we cannot do.

If you are referring to our CHAINED mode, then yes. You can save that as a user preset.

For those wondering, this mode lets you assign different effects to Left and Right.
If you feed a Mono into (Left), the Left Out is routed to Right In.

If you feed in 2 inputs (Left and Right), the chain 'breaks' and you simply can have different effects applied to each
signal. This can sound pretty awesome, actually.

Note that the algorithms in this mode have restricted Parameter CV controls, because instead of 4 per algorithm, you have 2.
Ah, yes, the chain mode indeed. Sounds great. Thanks for clarifying. :)

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Mon Mar 29, 2021 6:43 pm

paults wrote:
Mon Mar 29, 2021 3:54 pm
The time-stretch uses a phase vocoder.
Thanks, Paul! I watched your entire interview with Ken Flux Pierce—your dry humor slayed me! I heard you mention the phase-vocoder for another algorithm so I was guessing that was what you used. Last night, I listened to every demo on the SynthTech site and was really impressed—the time-stretching in Spectral Time Machine sounds really good. Anyway, I just ordered my new E520 today so I'm super excited!

Below is my 12U 'B' rack and new home for the E520 (the only thing missing is the E520). I also have an E440 OTA-filter and a standalone-Deflector Shield, but I'm still keeping it. That way I won't tie-up my whole E520 when using that effect (though, I saw from your interview that the E520 version is more fully featured).

Anyhow, again, I'm super excited to finally have the time-stretch capability in a high-fidelity module such as the E520. What I can do with that by slowing down human speech, breaking glass, car crashes, etc. should be really cool. Previously, I was using Serato Sample/MPC Live for time-stretching samples, but it was extremely tedious to time-stretch in only 50%-increments.

I'm hoping the E520 will inspire me to make some good time-stretch demos since it's a feature which seems to get less attention than I think it merits as a creative sound-manipulation tool. The demo on the SynthTech site shows just how interesting that can sound, particularly with human speech. Finally, I'll have that ability in a very hands-on, easy-to-use UI. I feel lucky that I got into modular just when such super-modules as this are now becoming available.

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by emeb » Mon Mar 29, 2021 6:55 pm

studio460 wrote:
Sat Mar 27, 2021 5:01 pm
• TImeline-scrub: Personal request for future firmware!
Not really feasible with the UI we've got on this hardware. Scrubbing generally needs a fairly high-resolution control with range approaching infinity. The CV inputs are limited to ~1 part in 4000 which would limit you to a few seconds of range, and the UI encoder is way too coarse to be really useful for this (plus the detents would get in the way of smooth action).

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Mon Mar 29, 2021 7:11 pm

emeb wrote:
Mon Mar 29, 2021 6:55 pm
studio460 wrote:
Sat Mar 27, 2021 5:01 pm
• TImeline-scrub: Personal request for future firmware!
Not really feasible with the UI we've got on this hardware. Scrubbing generally needs a fairly high-resolution control with range approaching infinity. The CV inputs are limited to ~1 part in 4000 which would limit you to a few seconds of range, and the UI encoder is way too coarse to be really useful for this (plus the detents would get in the way of smooth action).
Gotcha! Thank you for your prompt reply—appreciate the detailed explanation!
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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Sat Apr 03, 2021 1:02 am

Arrived today! Just got it in the rack—paired with my E352—only tried Shimmer Reverb and Spectral Drone Hires so far . . . and, wow! Instant drone-machine. Man, neither module is ever leaving my rack—what an excellent pairing. Can't believe I hesitated on this purchase. Been waiting in anticipation since October 2020 and now it's finally here! I just made the perfect spaceship-drone in about five seconds!

Had to rip apart two rows of stuff to install this so I still gotta re-install my Bitbox somewhere to process some samples through the E520's Spectral Time Machine for some super time-stretching action!

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Sat Apr 03, 2021 1:52 pm

First Spectral Time Machine demo: THE ENTIRE "ISSUE" WAS DUE TO USER-ERROR!
Last edited by studio460 on Sat Apr 03, 2021 6:21 pm, edited 5 times in total.
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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by paults » Sat Apr 03, 2021 3:38 pm

What is the Feedback on Left & right set to? Possibly set to so large positive (past 12:00 up) position?

Also, anytime "something doesn't sound right" when playing around, switch over to a factory preset and don't touch any knobs.
the sceen parametes will switch over (an orange-red color is default) and in many cases the 'unexplained thing' will go away.

Meaning its a setting somewhere.

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Sat Apr 03, 2021 3:43 pm

Thanks for responding, Paul! Phase blur and feedback are both set to zero; time-factor and pitch at at 1.0x. I didn't change any other defaults else except for time factor.
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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by paults » Sat Apr 03, 2021 3:52 pm

What is the Spectral Feedback on Parm 4? Maybe it is cranked up? If zero, what are the front panel L/R Feedback pots set to (try straight up at 12:00)

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by paults » Sat Apr 03, 2021 3:57 pm

also: 'default' is not the same as a 'preset'. Each algo has 1 or 2 factory presets, which will over-ride the front panel pots for Feedback and Mix.

to my ears, it sounds like a combination of really excessive feedback.

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Sat Apr 03, 2021 4:07 pm

Edit: It was all user-error. Apologies!
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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by paults » Sat Apr 03, 2021 4:10 pm

Is this the setting you made the example with?

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Sat Apr 03, 2021 4:20 pm

Yes. I just power-cycled the unit, and made a new recording with same settings below. WARNING! Loud audio at tail. This over-modulation occurred DURING recording without touching any buttons. The white-noise like tail continued and did not stop until I pressed TAP to stop the recording. Edit: This was all due to user-error—IGNORE!



Front-panel image taken during recording:

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Last edited by studio460 on Sat Apr 03, 2021 5:37 pm, edited 1 time in total.
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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by LunaticSound » Sat Apr 03, 2021 4:53 pm

Yo Studio460, that audio blowing up sounds amazing! Could I get the file? Pretty please?

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Sat Apr 03, 2021 4:54 pm

Paul: I loaded a Time Machine factory-preset and as you predicted, the anomaly does not occur. Here is a recording using the factory-preset "backslow." [Note: I inadvertently had reverb and chorus turned on in Logic for that track.] I varied playback time-factor manually from 1.0x to 0.01x. However, I don't know what I could be doing that's messing with the levels on my own recordings. As a workaround, I suppose I could just use the factory-preset. Are you able to reproduce anything I've done?


LunaticSound wrote:
Sat Apr 03, 2021 4:53 pm
Yo Studio460, that audio blowing up sounds amazing! Could I get the file? Pretty please?
Sure! No problem! PM me your email. You actually want the part where the audio starts to over-modulate? If you're able to download it directly from Soundcloud, you have my full permission. Sent the full .WAV file! Hah! I guess it is kinda cool. Like if a nuclear bomb hit L.A. and all the radio stations suddenly went dead.
Last edited by studio460 on Sat Apr 03, 2021 5:14 pm, edited 1 time in total.
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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by Funky40 » Sat Apr 03, 2021 5:09 pm

studio460 wrote:
Sat Apr 03, 2021 4:54 pm
I don't know what I could be doing that's messing with the levels on my own recordings.
you have Two feedback pots, L + R, you are aware ?
one was set to 12 o´clock, one to CCW in your foto
any other forums for "experimental electronic music making" or eurorack to consider ?
beside "lines" which was allready suggested

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by emeb » Sat Apr 03, 2021 5:12 pm

Looking at the screen shot you posted I can see you've got Parm 4 "Spect Fdbk" set to 49%. This is likely the cause of the issue you're hearing. Spectral Feedback mixes the Play output back into the Record input and can cause the signal power in the looping buffer to increase dramatically if not used carefully. I've verified this on my bench unit with the same settings you've got in the screenshot - it plays back at normal input levels until it reaches the loop point where the feedback comes in, which also explains the randomness of when you hear the loudness increase, since that depends on the time shift as well as the length of the loop you defined.

Try dialing Parm4 down fully CCW to 0% and see if that sounds better.

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Sat Apr 03, 2021 5:16 pm

Funky40 wrote:
Sat Apr 03, 2021 5:09 pm
you have Two feedback pots, L + R, you are aware ?
Where is the second feedback pot? Parameter 3's pot (which is at zero) controls phase blur. Nevermind! I found it! Will try with these settings!
emeb wrote:
Sat Apr 03, 2021 5:12 pm
Looking at the screen shot you posted I can see you've got Parm 4 "Spect Fdbk" set to 49%.
I set feedback to 50% based on Paul's suggestion and only for the most recent recording test. On all previous recordings, feedback (parameter 4) was at 0%. All of the level-anomalies occurred with this pot set full counter-clockwise with a displayed value of 0%.

The photo below (posted earlier) is the status of the panel for all other affected recordings:

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Re: Synth Tech e520 Hyperion Stereo Audio Processor

Post by studio460 » Sat Apr 03, 2021 5:33 pm

I'M AN IDIOT!

Problem solved. It was all user-error. The left and right feedback pots were midway through this entire episode (I didn't realize there were three feedback pots). I will clean up the prior posts to erase any negative reflection on the E520.
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