Hello. I am assembling a homemade two-way speaker with an active crossover and would like to add low-frequency boost to achieve interesting sound at low volume levels. Having studied the topic a little, I came to the conclusion that I need a limiter or a compressor. Inspired, I turned to a group of audio enthusiasts with a request to help find a simple compressor circuit. This is a circuit on an optocoupler and a dual operational amplifier, quite simple. I was able to make a primitive printed circuit board and began testing it with only a superficial understanding of how to set it up. After fiddling around for several days, I realized that nothing was working. Since the compressor is quite slow and affects the entire incoming signal, there were volume jumps or a drop in volume in general if a long release was established.
In general, I am interested in portable speakers and have tried many different ones. The models that stood out most were JBL and Harman/Kardon. Their peculiarity is that low frequency compression occurs without any noticeable effect on other sounds, and to be honest I don't really understand how they achieved this. Ideally, I would like to understand their signal processing algorithm and assemble something similar for myself. Maybe someone has studied this topic and can tell me more?
I make some measurements harman/kardon speaker amplifiers:
In general, I am interested in portable speakers and have tried many different ones. The models that stood out most were JBL and Harman/Kardon. Their peculiarity is that low frequency compression occurs without any noticeable effect on other sounds, and to be honest I don't really understand how they achieved this. Ideally, I would like to understand their signal processing algorithm and assemble something similar for myself. Maybe someone has studied this topic and can tell me more?
I make some measurements harman/kardon speaker amplifiers:
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Welcome aboard!
Maybe you can start a thread about your comp, introduction sub-forum is not the best place to have people looking at your projects.
You can ask a moderator to copy or move your first message.
So if i understand your description you want to implement some kind of 'loudness' feature. Imho, it doesn't require a comp.
What is doable through dsp is not easily translated into analog. Multiband compression is one of this not easy to implement feature ( and this is what would be required to implement rather than a simple comp).
Could you explain why you came to the conclusion a comp is needed?
Maybe you can start a thread about your comp, introduction sub-forum is not the best place to have people looking at your projects.
You can ask a moderator to copy or move your first message.
So if i understand your description you want to implement some kind of 'loudness' feature. Imho, it doesn't require a comp.
What is doable through dsp is not easily translated into analog. Multiband compression is one of this not easy to implement feature ( and this is what would be required to implement rather than a simple comp).
Could you explain why you came to the conclusion a comp is needed?
Then an eq ( working on frequency content) is the tool needed, not a comp ( which work on dynamic behavior, even if with multiband treatments a comp can be used to shape frequency profile, but forget about it it's way to complex to implement in analog).
Your loudspeaker are Bass Reflex or sealed?
Start a dedicated thread in 'multi way' forum, no need to clutter further your introduction. 😉
Your loudspeaker are Bass Reflex or sealed?
Start a dedicated thread in 'multi way' forum, no need to clutter further your introduction. 😉