|Timestamp||Describe and give examples of a sample rates.||What is the relationship between sample rate and the frequency spectrum?||Why would you choose to record at a higher sample rate over a lower sample rate? Give an example.||There are a variety of tools on a recorder that affect gain control – auto vs. manual, limiters, compressors, low cut filters, etc. Explain these and how they affect gain.||Name the two recording file formats and the difference between them.||What are the channels of a recording? What is the difference between mono and stereo? And why would you hear a mono recording in just one ear?||What is a microphone's polar pattern? What does it tell about the microphone's function? Give an example.||What is the difference between a dynamic and condenser microphone? Give an example.||Name of group participants|
|2/11/2014 8:33:25||Sample rates is the amount of sample (audio) recorded within a unit of time (seconds). The higher the sample rate is measured in Hz or kHz. The higher the sample rate (the more audio picked up per second) the better quality of the recording.||The sample rate determines the recorders ability to pick up the different levels/points on the frequency spectrum. (The difference between being able to hear high and low sounds and the variables in between.)||You would chose a higher sample rater over a lower one so that your recorder can pick up higher pitched sounds on the frequency spectrum and leave you with a better quality recording.||you broke up my group cause you were jealous.||you broke up my group cause you were jealous.||you broke up my group cause you were jealous.||you broke up my group cause you were jealous.||you broke up my group cause you were jealous.||Stephanie Basdeo|
|2/11/2014 8:38:08||Sample rates are the amount of samples/sounds recorded from a wavelength. The measurements are the number of samples recorded per unit of time. Some examples of sample rates are 44.1 KHz and 48 KHz||The higher the sample rate, the more the recording device can capture the frequency spectrum.||Higher sample rates pick up higher tones in a given sound sample. For example, if recording at a playground, a higher sample rate would pick up higher pitches accurately (the screech of a swing set, birds chirping, etc.).||Automatic gain control determines the how much electric current is flowing through the microphone based on the sound in the environment. Manual gain control on the other hand, users control the amount of current flowing through the mic. Limiters limit the current at a set point. Compressors compresses the sound quality (leaving out some of the high and low ends of the recording), making the sound file smaller.||MP3 and WAV. MP3's are compressed and WAV's are uncompressed.||The different types of channels of a recording are mono and stereo. Mono records from one channel while a stereo records from 2-4 channel sources. The reason why we hear a mono recording in just one ear is because the sound is all on one channel.||A microphone's polar pattern is how sensitive the sound is at different angles.||Dynamic transducer-Electromagnetic sounds vibrate through the mic.|
Condenser transducer- does it differently
|2/11/2014 11:47:05||is the measurement of fluctuating sound per sec.||both deal with measuring sound; depending on how high or low the pitches are. When the frequency wave length tightens, you will need a higher sample rate to be able to capture all of the sound clearly.||a higher sample rate will be able to pick up more of the sound that is being recorded; and the opposite for lower sample rates.|
e.g. if you have 10,000Hz per sec you will need to have a sample rate of 96,000KHz to pick up a sample that represents 1/10,000 per sec.
|Auto gain control is the automatic setting input into the device. |
Manual gain control is when you input the settings you want into the device for your specific type of recordings (file type, sample rate, bit rate ect.)
A low cut filter is when you cut out low sounds in your recordings.
|WAV files are uncompressed raw files that maintain a higher quality of sound when compared to an MP3 file which compresses the file to save space leading to a loss of quality/sound||Mono is when you record from one channel & stereo is when you are recording from two channel (left & right). You would only hear the mono from one side of the ear phone if you do not input the recording from the one mic into both channels.||The shape of a microphone affects how it records audio and the intake of voices/sounds around it. |
For example a boom microphone would pick up voices/speaking better and another would pick up more noise in the background.
|Dynamic mic is an original mic that a singer would use and a condenser mic would what a recording artist would use in a studio because it has a filter.||Laywah, Lisa, Melvin, Marissa|
|2/11/2014 11:48:23||Sample rates are the amount of data taken from a wavelength in order to convert analog into digital.||The relationship of sample rate & frequency spectrum is that the amount of sample rate is dependent on the frequency spectrum i.e you would use different amounts of sample rates for a violin as opposed to a human voice||The sample rate covers more data along the frequency spectrum. The lower sample rate covers less data which cuts off highs and lows. An example is a violin which has more highs would need a higher sample rate.||Auto is when the device automatically adjust itself when receiving the electrical current. Manual is the gain thats set by the user. Auto affects the gain control by adjusting the gain for the electrical input. A limiter is a threshold that is set for the input. A compressor is a threshold which allows higher yet controlled input to come through. Lo cut filters are filters which cut the electrical input for its low ends.||WAV & MP3 are the file formats. MP3 is compressed and WAV is uncompressed. WAV is a bigger file than MP3.||The channels of recordings are what the device uses to receive the electrical current. Mono consists of one channel while stereo consists of more than one. It can have two or four. A mono recording only plays out of one speaker.||n/a||n/a||jessica dobrowski|
|2/11/2014 12:05:50||Sample rate is the amount of samples taken from a wavelength. Some examples of sample rate is 44.1 KHz and 48 KHz. So the higher the sample rates the higher the quality of the conversion of the audio from analog to digital format.||The frequency spectrum is the wavelength from the vibrations of the audio from analog format. The sample rate relates to how this wavelength will be reproduced in a digital conversion.||A higher sample rate ensures the amount of high and low end sounds that are reproduced. So 96KHz reproduces better lows and ends than 44.1 KHz||Auto, auto-adjusts the gain level depending on the audio in the environment and the users needs. Manual gives the user full control over the gain. Limiters will limit the recording to a specific range. Compressors cut the low and high ends. Low cut filters get rid of the low end recordings.||MP3 formats are compressed. WAVs are uncompressed and better quality than MP3.||Mono records on just are channel, while stereo records on multiple channels. You would hear mono in one ear because more deals with one channel, where stereo pushes the audio to multiple channels.||The polar pattern is how sensitive a microphone is to detecting audio, and the angle. So an omni-directional microphone detect audio all around and are good for soundscapes. Cardioid microphones detect a range in the direction they are aimed in and better for interviews and live music.||A condenser microphone is a different transducer, and are used for recording music. A dynamic microphone is used for live performances.||Benzel McClellaan, Jayson Jones, Khalil Cantey, Chiedu Nwani|
|2/11/2014 23:53:54||The rate at which the fixed intervals sample the original signal each second is the sample rate.|
e.g. a sampling rate of 48 kHz means that samples are taken 48,000 times per sec., or each sample period is 1/48,000 sec.
|The higher the sampling rate the greater a system’s frequency range.|
The sample rate is what you read on the frequency spectrum per sec.
|-if high frequency response in digital recording is to reach 20 kHz, the sampling frequency must be at least 40 kHz. Too low a sampling rate would cause loss of too much information.||not sure how to answer. Need help with this!||Lossless file format: A data compression process during which no data is discard.|
AIFF (Audio interchange file format)-- .aif, .aiff
Broadcast Wave format—.wav
Windows Media Audio—.Wma
Lossy file format: A data compression process during which data that is not critical is discarded during compression.
ATRAC (used with mini disc)
Sun — .au
|stereo and mono.|
-Stereo requires two discrete signals: A (left) and B (right). To reproduce these signals in mono they are summed: A+B. This also explains why you might hear mono recording in one ear when recording because it is being summed into one signal which could be either sent through the left or the right side.
|A polar response pattern when displayed on a graph shows concentric circles; usually divided into segments of 30 degrees. The graph shows how the relationship between sensitivity in relation to which angle the sound is coming from.|
e.g. The cardioid mic has a wide-angle pick up of sound in front of the mic and very little sound can get in through the rare. The super-cardioid mic on the other hand picks up sound from the front and a good amount from the rare.
|dynamic microphone: A microphone that transduces energy electromagnetically. Moving-coil and ribbon microphones are dynamic.|
capacitor microphone A microphone that transduces acoustic energy into electric energy electrostatically. Also called condenser microphone.
|Lisa (came back on my own)|