How To Check Sample Rate Of Wav File' title='How To Check Sample Rate Of Wav File' />Glossary Audacity Development Manual. This page gives very brief explanations of technical terms related to digital audio, with some links to Wikipedia for much more comprehensive explanations. General Terms Term Description. Deep Ze 64 Bit Windows 7. ADC Analog to digital converter. The part of a soundcard which records an analog, real world sound like a voice or guitar and converts it to a numerical representation of the audio that a computer can manipulate. Algorithm A set of steps or a procedure that will produce a desired result. Aliasing Aliasing is an effect that causes different audio signals to become indistinguishable or aliases of one another when sampled. It also refers to the distortion or artifact that results when the signal reconstructed from samples is different from the original continuous signal. ALSA A Linux kernel component for providing device drivers for soundcards. Known as an audio host in Audacity. Amplitude The level or magnitude of a signal. Audio signals with a higher amplitude will sound louder. Artifact Sonic material that is accidental or unwanted, resulting from the editing of another sound. ASIO Audio Stream InputOutput ASIO is a computer soundcard driver protocol for digital audio on Windows, created by Steinberg. Musics Multiformat Converter supports dragging and dropping files from Explorer or File Manager into its main window. Files can be selected from File. Hands Make Sounds is a free sample collection featuring 158 high quality samples of hand claps and finger snaps in 24bit WAV format. This is a list of file formats used by computers, organized by type. Filename extensions are usually noted in parentheses if they differ from the file format name or. The following table lists the multimedia file types that are supported by different versions of Windows Media Player How to determine the version of. It provides a low latency, multi channel interface between a software application and the soundcard. Audacity Project Format. The format in which Audacity stores its projects. This consists of a reference file with the extension. AU. This structure makes it quicker for Audacity to move audio around ideal for cutting and pasting audio in a project. Audio CDs CDs containing PCM audio data in accordance with the Red Book standard. They can be played on any standalone CD player as well as on computers. Band pass filter A band pass filter is a filter that passes frequencies within a certain range and rejects attenuates frequencies outside that range. A band boost filter is similar to a band pass filter except that it amplifies frequencies within a certain range and passes frequencies outside that range untouched. Band stop filter A band stop filter or band rejection filter is a filter that passes most frequencies unaltered, but attenuates those in a specific range to very low levels. It is the opposite of a band pass filter. A band cut filter is a band stop filter that attenuates the frequencies in a given frequency band by a specified amount. A notch filter is a band stop filter with a narrow stopband high Q factor. Batch Processing Automation of a series of repetitive tasks on a computer so that the tasks run without manual intervention. In the early days of computers this was done by processing stacks of punch cards. Super-Audio-Recorder_2.png' alt='How To Check Sample Rate Of Wav File' title='How To Check Sample Rate Of Wav File' />In Audacity, repetitive tasks are handled by creating a Chain of actions. The Chain can apply a predetermined sequence of effects to the current project, or can be run unattended to apply effects andor format conversions to a batch of external audio files. Bit A measure of quantity of data. A bit is one binary digit, a 0 or a 1. Bit Rate The number of computer bits conveyed or processed per unit of time. Normally expressed in kilobits per second kbps. For an uncompressed, PCM file, kbps bit rate is sample rate multiplied by sample format multiplied by number of channels, divided by 1. Red Book. WAV or AIFF. Rates are much lower for compressed or lossy formats like MP3. For MP3 at constant bit rate, reducing sample rate does not reduce the bit rate and hence does not make the MP3 smaller, except for 1. How To Check Sample Rate Of Wav File' title='How To Check Sample Rate Of Wav File' />Hz and below. CBR Constant Bit Rate In this format, the rate at which audio uses its data bits does not vary. Silence uses as much disk space as audible sound. Cepstrum The cepstrum of an audio signal is related to the spectrum, but presents the rate of change in the different spectrum bands. Its particularly useful for properties of vocal tracks and is used, for example, in software to identify speakers by their voice characteristics. Clipping Distortion to sound, usually due to the audio being too loud. Unless the original audio is 3. Bank Management And Financial Services 7Th Edition Test Bank. B will have their tops lopped off flattened at 0 d. B, rather than showing smooth curves. Clipping can also be an intentional distortion effect that lops off part of the waveform, reducing its amplitude and changing its frequency content. Codec A computer program capable of encoding andor decoding a digital data stream. The term is a portmanteau a blending of two or more words of coder and decoder. There are numerous audio file formats for storing audio on a computer. WAV format is widely used on Windows and is needed for creating an audio CD. Companding Refers to the process of compressing the dynamic range of an audio signal before storage or transmission, then expanding the signal on retrieval or reception. The term is a portmanteau a blending of two or more words of compressing and expanding. Compressed Audio Format Any format that will reduce the space required in storing or representing an audio signal. Space savings can be made for example by discarding certain frequency components which may be inaudible. MP3 takes this approach. Other formats such as FLAC compress without audio loss, but achieve lower compression rates. Compression A process that tends to even out the overall volume level by increasing the level of softer passages and decreasing the level of louder passages. See also Compressed Audio Format. Cycle An audio tone consists of an oscillating sound pressure on the ear. One cycle is one full transition of positive pressure through to negative pressure, back to positive pressure again. DAC Digital to analog converter. The part of a soundcard which plays back a numerical representation of audio as an analog, real world sound like a voice or guitar. Data CDs Data CDs contain data intended to be read directly by a computer. The data may include audio and any other types of file such as images and documents. Most standalone CD players will not play data CDs, but some DVD players will. Including compressed audio files on a data CD can greatly increase the playing time compared to audio CDs. B Decibels. A logarithmic unit typically of sound pressure describing the ratio of that unit to a reference level. DC Offset An offsetting of a signal from zero. A signal with DC Offset would appear in the Audacity Default Waveform view to be not centered on the 0. DC Offset results in reduced headroom and can cause clicks at the start and end or distortion after running effects. It can be corrected in Audacity by running Normalize. Dynamic Range The difference between the loudest and softest part in an audio recording, the maximum possible being determined by its sample format. For a device, the difference between its maximum possible undistorted signal and its Noise Floor. Exponential A non linear relationship where a change in value is proportional to the current level. If you double the value in a time period, it doubles again in the next period if you halve the level in a time period, it halves again in the next period. For an exponential fade in, the curve becomes steeper with time an exponential fade out becomes flatter with time. See also Logarithmic. FFT Fast Fourier Transform. A method for performing Fourier transforms quickly. File name extension A suffix of three or four characters added to a file name which defines the format of its contents. The suffix is separated from the file name by a dot period, as in song. The extension of common formats is often hidden on Windows, but can be turned on in the systems Folder Options. Filter A sound effect that lets some frequencies through and suppresses others.