About Speaker Range Tester
~~~~~~~~~~~~~~~~~~~~~~~~~~
This program is designed for testing the frequency response of a speaker
or any other audio equipment such as filters, amplifiers, etc.

It works by sending out (playing) sinus waves at one frequency at a time
and then meassure the input magnitude from for example a microphone for
each frequency. When it has tested a specified range it will stop and
draw a graph or diagram with deciBell versus frequency to let you see
and analyse the frequency response curve.


News and Changes
~~~~~~~~~~~~~~~~
* First release.


Requirements
~~~~~~~~~~~~
- The program uses MUI and requires Lamp.mcc.
- To play and record, AHI is used.
- A full duplex sound card (and AHI driver), or two individual sound
  cards are needed.
- A microphone if you are going to test speakers.


Mini Usage Guide
~~~~~~~~~~~~~~~~
Setup:
1. Set up your microphone, or other equipment to test.
2. Start the program.
3. Go to the Settings page and choose your AHI device you plan on using
   for playing and the one you have configured for your microphone
   (or other input equipment) as input unit.
4. Go to the page Manual Experimentation.
5. Click on Player to start playing a test tone to make sure the AHI
   unit is configured correctly.
6. Slide the knob just below "Frequency:" to change the test tone.
7. Start the recorder by clicking on the Recorder button.
8. Watch the input level and see that it reacts to the microphone if
   that is what you have connected. The input level should show a
   green light, or possibly yellow. This indicates the level is good.
   Blue means the level is too weak, red means it is too strong.
9. When the level is ok for most frequencies (test with the frequency
   slider) it is time for the real test.

The test:
10. Enter a lowest frequency for the test. The default 20Hz is considered
    the absolute lowest bass frequency a human can hear. It is also the
    goal frequency of a HiFi speaker. Very few speakers can play this low
    though (within their -3dB range).
    NOTE: It may be wise to select a higher frequency if you have a
    subwoofer that you know can't handle this low frequency and may blow!
11. Select the highest frequency to test. The default 20kHz (20000Hz) is
    considered the highest trebble frequency a human can hear, although
    most adults can't hear above 15-16kHz.
12. Select the test resolution. High is usually sufficient for a good reading.
    "Full" tests 100 frequencies per octave. (One octave is the doubling
    of the frequency from f.ex. 100 to 200Hz or from 200 to 400Hz.)
    "High" tests each musical halv note per octave. There are 12 half
    notes per octave.
    "Medium" tests 4 notes per octave.
    "Low" tests 2 notes per octave.
13. Passes/frequency is how many AHI buffers should be played and recorded
    for each frequency. Each pass is 1/50th of a second. More passes gives
    a better average reading for each frequency.

Finally:
14. If you are testing a speaker with a microphone, make sure the room is
    as quiet as possible to prevent ambient noise from giving incorrect
    results. Constant ambient noise from for example a computer is quite
    ok, but sudden noises such as someone speaking or a squeeking chair
    will give fake peaks in the reading.
15. Click the Start button and let the program play its tones. It will
    take a few seconds. After the test completes a graph will open and
    show you the result.

Have fun! :-)
Drop me a mail if you have any questions.


Future
~~~~~~
* Possibility to load a reference curve to use for compensation of
  non-linear equipment.

* Possibility to view many curves at the same time.

* Self-adjusting output volume and input gain.

* Saving of sampled input wave data.

* Write a better Guide documentation.

* Release versions for OS3 and MOS.

--
Other programs by Deniil 715! can be found on OnyxSoft homepage at:
  http://www.onyxsoft.se/

Feel free to mail me if you found bugs or have suggestions:
  daniel / onyxsoft se

NOTE: Please, NEVER publish my e-mail, or a text file containing my
      e-mail, on a web page or similar unless spam-encrypted like above.
      Thankyou.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 4166    6334  65.8% -lh5- 791a Jun 15 17:45 SpeakerRangeTester.info
[generic]               181071  519585  34.8% -lh5- e1d4 Jun 15 17:16 SpeakerRangeTester/SpeakerRangeTester
[generic]                 1956    3131  62.5% -lh5- 269b Jun 15 17:45 SpeakerRangeTester/SpeakerRangeTester.info
[generic]                 2088    4412  47.3% -lh5- 1def Jun 15 12:17 SpeakerRangeTester/SpeakerRangeTester.readme
[generic]                 1800    2764  65.1% -lh5- db6f Jun 15 17:45 SpeakerRangeTester/SpeakerRangeTester.readme.info
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         5 files  191081  536226  35.6%            Jun 18 21:32