Is there such thing as dynamic EQ? For example I want to decrease 15-20 Hz to avoid port noise, but I want to decrease it only if it's above 80 db

[PashkaTLT]

I would hope so at a cost of $200, correct?

Yes, unfortunately you're correct. I'm using a trial for now, and will have to either pay or find an alternative when the trial ends...

 

[Chris A]

Many readers here may be focused on only the 10-20 Hz dynamic attenuation for your BR subwoofer application. It can do that job without breaking a sweat.

However, when you consider what the plugin was meant to do, and what it can do for audio consumers (i.e., reversing some of the compression used for one-size-fits-all music tracks, this plugin is fairly spectacular, especially when you consider that it works just as well at playback time with a digital music player (as a VST plugin) as it does for audio file editing for saving the audio files for playback later.

 

[ShadowBoxer]

I would be interested to learn what the Fab-4 dynamic plugin can do that the TDR Nova plugin cannot considering the huge price difference.

 

[PashkaTLT]

I would be interested to learn what the Fab-4 dynamic plugin can do that the TDR Nova plugin cannot considering the huge price difference.

Well, in my case I couldn't make a steep curve with TDR Nova. I tried to reduce < 20 Hz and it was affecting even 100 Hz because the curve was very shallow. Maybe I just didn't understand how to achieve what I need with TDR Nova.

Fab-4 has a very good selection of filters, up to 96 db/octave, so it was very easy to make a steep curve, only affecting <= 15 Hz.

 

[Chromatischism]

Selll the subs and go with big sealed ones maybe?
Good sealed subs extend to 10hz flat inroom and no port noise.

https://www.avsforum.com/threads/is-it-possible-to-make-a-ported-subwoofer-that-wont-make-port-chuffing-noise-at-high-spl.3333098/post-64210886

 

[PashkaTLT]

Selll the subs and go with big sealed ones maybe?
Good sealed subs extend to 10hz flat inroom and no port noise.

No, I'm perfectly happy with the subs. The chuffing was the only issue that bothered me a little (and it happened in like 0.1% of my music), but with the dynamic EQ, there's no issue anymore. It only decreases frequencies <= 15 Hz at high volume and doesn't affect 16+ Hz even at high volume.

 

[Audionaut]

You can purchase a Sigma Studio-programmable DSP from the ADAU family. There are some very affordable options based on the ADAU1701 for example. In Sigma Studio, you can easily program it to your specifications.

 

[john61ct]

You can purchase a Sigma Studio-programmable DSP from the ADAU family. There are some very affordable options based on the ADAU1701 for example. In Sigma Studio, you can easily program it to your specifications.

Can you suggest reasonably priced ones preferably finished products in a box?

ideally 4 or more output channels for doing crossovers

Does going to higher output counts require the pricey ADAU1452 / ADAU1467 based units?

 

[Audionaut]

Can you suggest reasonably priced ones preferably finished products in a box?

ideally 4 or more output channels for doing crossovers

Does going to higher output counts require the pricey ADAU1452 / ADAU1467 based units?

You can absolutely get reasonably priced, ready-to-use ADAU1701-based units with four outputs, and they work perfectly fine for basic crossover applications. The chip already provides four DAC channels internally, so a typical 2-in/4-out setup is straightforward and doesn’t require anything fancy.

I haven't used the ready-made devices myself yet, but they should have the same functions as an external board. Maybe there are a few user reviews here on ASR as well


For example:

WONDOM OFFICIAL SHOP - Bluetooth Amplifier Board - Sure Electronics - BCPB - 18650 charger - T-AMP - Volume Control

Sure Electronics is a professional audio amplifier supplier that provides electronics hobbyists and business partners the middleware which can help reduce customers' development difficulties and save their precious time-to-market by making the products directly released in the market.

store.sure-electronics.com

or

WONDOM OFFICIAL SHOP - Bluetooth Amplifier Board - Sure Electronics - BCPB - 18650 charger - T-AMP - Volume Control

Sure Electronics is a professional audio amplifier supplier that provides electronics hobbyists and business partners the middleware which can help reduce customers' development difficulties and save their precious time-to-market by making the products directly released in the market.

store.sure-electronics.com

The real limitation of the ADAU1701 isn’t so much the channel count itself, but the available I/O and processing headroom. As soon as you want to go beyond four outputs, things get more complicated, because you either need to add external DACs via I2S or move to a more capable DSP platform. In practice, that’s the point where designs based on ADAU1452 or ADAU146x start to make more sense, both in terms of flexibility and overall performance.

So for simple multi-way crossovers, the ADAU1701 is a very cost-effective and practical choice, but if you’re aiming for higher channel counts or more complex processing, stepping up to a more powerful DSP is usually the better route.

 

[john61ct]

Looking for line level only implementations please.

If tinsnips could remove the amp? but what a waste...