Acoustic Treatment

Possibly, but usually it's the uneven reverberations, not reverberations as such, are the main cause of problems.

If you cannot install a curtain over the wall of glass, allow 1.0m to 2.0m of space behind you. Basically an acoustic professional will introduce solutions after doing the measurements. If the wall of glass is to remain, there is not much point of hiring an expert unless you are open to altering the frequencies of the signal by introducing some sort of equalizer into the chain.

$450 was the price quoted me in the Seattle area for an in-home analysis. This included up to two hours time with the agent trying/applying various treatments. Then you pay the cost of the treatments which were $200 per 24x24-inch panel. I suspect they'll try to sell you as many as possible.

If you don't like the idea of curtains consider blinds. One side wall of my listening room consists of a large bay window. I have fabric-covered blinds on the window and it provides a very good acoustic diffusor.

With REW ("Room Equalisation Wizard", a free program that runs on a PC or Mac) and a relatively inexpensive microphone it is possible to do in-room sound measurements yourself and then deal remotely with a company such as GIK, who can accept REW files and analyse them (and armed with a room plan will suggest what measurements to make), and identify problems and solutions from their range, all free of charge, though obviously hoping for a sale. they come across as highly professional and helpful - and are perhaps of particular benefit if you live somewhere remote from directly available expertise.

joerand posted:

...
If you don't like the idea of curtains consider blinds. One side wall of my listening room consists of a large bay window. I have fabric-covered blinds on the window and it provides a very good acoustic diffusor.

A blind has a regular pattern with short repeat distance and hence doesn't work well as a diffuser.  One covered in fabric will mostly function as an HF absorber.

Innocent Bystander posted:

With REW ("Room Equalisation Wizard", a free program that runs on a PC or Mac) and a relatively inexpensive microphone it is possible to do in-room sound measurements yourself and then deal remotely with a company such as GIK, who can accept REW files and analyse them (and armed with a room plan will suggest what measurements to make), and identify problems and solutions from their range, all free of charge, though obviously hoping for a sale. they come across as highly professional and helpful - and are perhaps of particular benefit if you live somewhere remote from directly available expertise.

Thanks for this information.

Huge posted:

joerand posted:

...
If you don't like the idea of curtains consider blinds. One side wall of my listening room consists of a large bay window. I have fabric-covered blinds on the window and it provides a very good acoustic diffusor.

A blind has a regular pattern with short repeat distance and hence doesn't work well as a diffuser.  One covered in fabric will mostly function as an HF absorber.

Thanks for the correction. Point being blinds might offer a preferable alternative to curtains with more options since they can be used with varying horizontal degrees of open or shut. This would apply to lighting ambience as well as any effect on sonic reflections in the room. Some manufactures offer dedicated sound absorbing blinds for this purpose though they appear to have more of an industrial/commercial application as opposed to domestic. The blinds in my room were bought well in advance of it being used as a dedicated listening room. Still, they seem to work well for HF absorption whether completely closed (at night) or cracked open during daylight hours. They can also be completely raised. Curtains seem more an either/or option, especially if you want natural light in the room during the day.

Hi JoeRand,   yes absolutely agree.