Log in
Register
Home
Forums
New posts
Search forums
What's new
New posts
New profile posts
Latest activity
News
Members
Current visitors
New profile posts
Search profile posts
Features
Log in
Register
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Menu
Install the app
Install
Reply to thread
Home
Forums
Pro Audio
Product Reviews
A New Way of Looking at Speakers and Rooms - Review of APL TDA
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="Jack Regula" data-source="post: 205236" data-attributes="member: 11500"><p>[h=2]Controlling and Configuring TDA[/h] The discussion so far has been focused on the unique2D and 3D maps of APL_TDA. Let’s look at its controls and see how else it can present measurement data.</p><p></p><p>[ATTACH]205237[/ATTACH]</p><p>Figure 9 TDA's main screen showing an IR log display</p><p></p><p>In the upper left hand corner of the main screen, TDA has shown me all the audio devices it has found on my system. Below it, I tell TDA which ones to use for input and output. Then I just click in the green “RUN MEASUREMENT” box and, after a delay for computation, get a measurement and a result display. Below the run button is a column of 4 grey buttons that allow the saving and subsequent importing of recorded measurement data and the impulse response computed from it. TDA automatically saves measurement impulse responses in a “HISTORY” directory below its executable.</p><p></p><p>Results appear in the large window to the right. Display options, as shown in the column of buttons immediately to the left of the main display window are: recorded measurement data, IR normalized, IR Log, the 3D and pl displays we’ve seen, AFR – the frequency response, DFR – delay vs frequency and non-linear distortion (NLDA). If the “SW” box is checked then pressing any of these buttons shows the curve in a new window from which the graph can be saved to memory in a variety of formats.</p><p>[h=2]Impulse Response Display[/h] Figure 9shows the IR Log display. The height of the peak above the noise floor shows the SNR ratio of the measurement. Reverberation time can be determined from the slope of the response envelope following the main IR peak. Zoom in/out controls are available. A linear IR graph is also available.</p><p>[h=2]Visualization of Reverberation Time[/h] Another way to visualize reverberation decay is with the PL display zoomed out to 300 ms. and configured for 60 dB dynamic range.</p><p></p><p>[ATTACH]205239[/ATTACH]</p><p>Figure 10 TDA pl Display Over 300 ms. for Visualization of Reverberation Time</p><p></p><p>(continued in next post)</p></blockquote><p></p>
[QUOTE="Jack Regula, post: 205236, member: 11500"] [h=2]Controlling and Configuring TDA[/h] The discussion so far has been focused on the unique2D and 3D maps of APL_TDA. Let’s look at its controls and see how else it can present measurement data. [ATTACH=JSON]205237.vB5-nodeid=205237[/ATTACH] Figure 9 TDA's main screen showing an IR log display In the upper left hand corner of the main screen, TDA has shown me all the audio devices it has found on my system. Below it, I tell TDA which ones to use for input and output. Then I just click in the green “RUN MEASUREMENT” box and, after a delay for computation, get a measurement and a result display. Below the run button is a column of 4 grey buttons that allow the saving and subsequent importing of recorded measurement data and the impulse response computed from it. TDA automatically saves measurement impulse responses in a “HISTORY” directory below its executable. Results appear in the large window to the right. Display options, as shown in the column of buttons immediately to the left of the main display window are: recorded measurement data, IR normalized, IR Log, the 3D and pl displays we’ve seen, AFR – the frequency response, DFR – delay vs frequency and non-linear distortion (NLDA). If the “SW” box is checked then pressing any of these buttons shows the curve in a new window from which the graph can be saved to memory in a variety of formats. [h=2]Impulse Response Display[/h] Figure 9shows the IR Log display. The height of the peak above the noise floor shows the SNR ratio of the measurement. Reverberation time can be determined from the slope of the response envelope following the main IR peak. Zoom in/out controls are available. A linear IR graph is also available. [h=2]Visualization of Reverberation Time[/h] Another way to visualize reverberation decay is with the PL display zoomed out to 300 ms. and configured for 60 dB dynamic range. [ATTACH=JSON]205239.vB5-nodeid=205239[/ATTACH] Figure 10 TDA pl Display Over 300 ms. for Visualization of Reverberation Time (continued in next post) [/QUOTE]
Insert quotes…
Verification
Post reply
Home
Forums
Pro Audio
Product Reviews
A New Way of Looking at Speakers and Rooms - Review of APL TDA
Top
Bottom
Sign-up
or
log in
to join the discussion today!