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 Sweetwater Gift Certificates - The Perfect Holiday Gift!
Sweetwater Gift Certificates - The Perfect Holiday Gift!
If you're not sure what to get for that special musician in your life, give them the gift of choice by offering a Sweetwater Gift Certificate! A Gift Certificate is easy to give and extremely convenient to purchase. Virtually instant, it's the perfect present to give if you're short on time or it's late in the shopping season! Plus, you can make your Gift Certificate out for any amount you choose. Call us today at 1-800-222-4700 or visit us online to purchase a Gift Certificate!
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| Square Wave Response |
A measurement used to evaluate a number of time-domain, amplitude and phase behaviors in audio components such as crossovers, filters and amplifiers. This is measured by injecting a "pure" square wave into the device and connecting the output to an oscilloscope or equivalent software. The appearance of the output waveform from the device gives much qualitative information - the accuracy of its reproduction of the square wave. A number of quantitative measurements can also be obtained from the square-wave response. Some of the most common measurements are:
Rise time: The time required for the signal amplitude to change from 10 to 90 percent of the total square-wave amplitude.
Overshoot: The amount by which the peak of the square wave exceeds its normal positive or negative amplitude. Large overshoots indicate peaking or excessive phase shifts in the high-frequency response of the device under test. Overshoot normally occurs only on the leading edges of a square wave.
Ringing: The tendency of band-limited square waves to oscillate on the peaks. This is largely a subjective measurement with the results stated as the severity of ringing. The greater the high-frequency peaking, the greater the ringing.
Tilt: A measure of low-frequency behavior. As low frequencies are filtered, phase shifts are introduced which cause the leading edge of the square wave to rise and the trailing edge to fall at more of an angle. This produces a tilt to the top and bottom of the square wave. The tilt is usually expressed as a percentage of the peak amplitude of the square wave.
Slew Rate: A measure of how fast a signal changes from one instantaneous value to another. The ideal square wave changes from one amplitude extreme to the other instantly. Practical devices cannot keep up with this transition and will often have a maximum speed with which they can change. This speed limitation will result in a tilted straight-line portion of the square wave edge. |
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| The ultimate time-waster for your K2661 |
Veteran Kurzweil users may already know this but for you more recent K2600 and K2661 owners, here's a bit of holiday relief for those moments when you're sitting at your keyboard and can't think of anything to do. Kurzweil had you in mind by including a single-player version of the classic arcade game "Pong" in the operating system! Here's how to get to it:
- Press the [MASTER] button
- Press the (UTIL) soft button. Notice that there's a soft button (second from the right) that's empty
- Press the empty soft button
- Finally, press the [SETUP] button.
The screen will display, "Welcome to the K2600 game!" Use your data wheel to move your "paddle" to meet the bouncing ball. When you've run out of steam, press the [EXIT] button 4 times to return to Program Mode.
If you're stuck with a case of crushing writer's block, Kurzweil Pong actually outputs notes from MIDI channel 16, changing notes depending on the ball's position while you play. Assign any program you want to channel 16 and Pong yourself a new melody. Or try setting Channel #16 as the Drum Channel (on the [MASTER] page) and choose a suitable drum program. This way you can claim to be actually making music! |
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