Audio

__Content: __ - Audio-editing software and Podcasts - Digital audio: MIDI, MP3, MP4, WAW - File formats: MP3,MP4,WAW

1) __Audio Editor Software __
. Audio editor software refers to the computer application in charge of the audio digital editing. It has multiple uses such us being a multimedia creator for recording audio, edit the length of time and the timeline, mix lot of sound tracks, apply effects and converts audio formats. All the audio editor software includes main aspects such record/edit ability, ease of use, help and support. Basically they must have the editing tools like, formatter convertor, channel mixer, batch processing conversions, equalizer and many others. Normally, the bases for this software are the audio effects, the filters, the display features and the help/support. ||
 * [[image:stgeorgesitgs/audio software.gif width="307" height="192"]] ||.

- WavePad Sound Editor || ||< __Paid audio editing programs __ - Blaze Media Pro  - GoldWave Digital Audio Editor - AVS Audio Editor ||< __Home Uses __ <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">Create Mixes <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">Convert Files <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">Burn CD’s || ||< __<span style="font-family: 'Century Gothic','sans-serif';">Professional Uses __ <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">Radio <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">Analyze Sounds / Restoration <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">Performance / Movie or Television ||
 * < __<span style="font-family: 'Century Gothic','sans-serif';">Free audio editing programs: __ - <span style="font-family: 'Century Gothic','sans-serif';">Audacity - <span style="font-family: 'Century Gothic','sans-serif';">Power Sound Editor
 * [[image:stgeorgesitgs/Podcast.png width="120" height="120"]] ||.

<span style="font-family: 'century gothic','sans-serif';">2) __<span style="font-family: 'Century Gothic','sans-serif';">Podcast __
<span style="font-family: 'Century Gothic','sans-serif';">Podcast refers to the multimedia digital file that made available on the internet, consisting of audio, video, PDF or ePub File; often it is portable media players. It is play on the broadcast in iPods making its portable function. Meanwhile, there is not only available in iPods, there are many others Mp3s players. When a podcast is available it is downloaded and converts into an Mp3. ||


 * __<span style="font-family: 'Century Gothic','sans-serif';">Professional Uses __ <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">Interviews <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">Political Debates  <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">Tutorial  __<span style="font-family: 'Century Gothic','sans-serif';">Home Uses __ <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">Series of audio/video  <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">Recordings on specific or types of topics  || [[image:stgeorgesitgs/Ipad.jpg width="157" height="155"]] ||

<span style="font-family: 'century gothic','sans-serif';">3) __<span style="font-family: 'Century Gothic','sans-serif';">Digital audio: MIDI, MP3, MP4, WAW __
<span style="font-family: 'arial','sans-serif';">- __<span style="font-family: 'Century Gothic','sans-serif';">MIDI (Music Instrumental Digital Interface) __ <span style="font-family: 'Century Gothic','sans-serif';">MIDI: is a cable that let electronic devices to communicate and share information for the creation of sounds. <span style="font-family: 'Century Gothic','sans-serif';">MIDI: MIDI files represent music notes y other information of sequence for music to be synthesize. - <span style="font-family: 'Century Gothic','sans-serif';">Controllers: generate the MIDI messages. - <span style="font-family: 'Century Gothic','sans-serif';">Generator Units of sounds: receive the MIDI messages and transform them into sound signals. - <span style="font-family: 'Century Gothic','sans-serif';">Sequencers: devices to reproduce record or edit MIDI messages. <span style="color: black; font-family: 'Century Gothic','sans-serif';">MIDI can only transmit signals in one direction; the signals come from a master device into a slave device. - <span style="color: black; font-family: 'Century Gothic','sans-serif';">MIDI OUT: connector from where the messages created by the master device come out. - <span style="color: black; font-family: 'Century Gothic','sans-serif';">MIDI IN: it is use to introduce messages to the slave device. - <span style="color: black; font-family: 'Century Gothic','sans-serif';">MIDI THRU: is also an output connector, but in this case in is send an exact copy of the messages that enters by MIDI IN. || <span style="color: black; font-family: 'Century Gothic','sans-serif';">A MIDI system consists of 3 basic elements:
 * __<span style="font-family: 'Century Gothic','sans-serif';">MIDI devices categories: __
 * [[image:stgeorgesitgs/MIDI.jpg width="150" height="99"]] || * __<span style="color: black; font-family: 'Century Gothic','sans-serif';">MIDI devices connectors: __
 * 1) <span style="color: black; font-family: 'Century Gothic','sans-serif';">The language protocol, that allows the language configuration.
 * 2) <span style="color: black; font-family: 'Century Gothic','sans-serif';">The connector or hardware interface.
 * 3) <span style="color: black; font-family: 'Century Gothic','sans-serif';">A format that allows the distribution of the MIDI files.

__<span style="color: black; font-family: 'Century Gothic','sans-serif';">MP3: __ <span style="color: black; font-family: 'Century Gothic','sans-serif';">is a sound format created by the Moving Picture Experts Groups (MPEG), which can reproduce sound formats, usually use for music. __<span style="color: black; font-family: 'Century Gothic','sans-serif';">Windows Media Audio (WMA): __ <span style="color: black; font-family: 'Century Gothic','sans-serif';">an audio data compression technology. Usually, WMA files come in ASF (Advanced System Format) containers which have the ability to be encrypted with DRM. - <span style="color: black; font-family: 'Century Gothic','sans-serif';">WMA: competitor to MP3 and Real Audio codecs. - <span style="color: black; font-family: 'Century Gothic','sans-serif';">WMA Pro: (new and advanced codec) supports multichannel and high resolution audio. - <span style="color: black; font-family: 'Century Gothic','sans-serif';">WMA Lossless: compresses audio data without loss of audio fidelity. - <span style="color: black; font-family: 'Century Gothic','sans-serif';">WMA Voice: applies compression using a range of low bit rates.
 * <span style="color: black; font-family: 'Century Gothic','sans-serif';">Four codecs:

<span style="color: black; font-family: 'Century Gothic','sans-serif';">AIFF (Audio Interchange File Format): created by Apple, used for storing sound data for personal computers and other electronic audio devices.

<span style="color: black; font-family: 'Century Gothic','sans-serif';">Other Digital Audio Examples:
 * <span style="color: black; font-family: 'Century Gothic','sans-serif';">AU (Audio for Unix)
 * <span style="color: black; font-family: 'Century Gothic','sans-serif';">AVI (Audio-Video Interleaved)
 * <span style="color: black; font-family: 'Century Gothic','sans-serif';">RMF (Rich Music Format)
 * <span style="color: black; font-family: 'Century Gothic','sans-serif';">Real Audio
 * <span style="color: black; font-family: 'Century Gothic','sans-serif';">RIFF (Rich Interchange File Format)

<span style="font-family: 'Century Gothic','sans-serif';">MPEG-4 Part 14 or MP4 is a <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|multimedia] [|container format] <span style="font-family: 'Century Gothic','sans-serif';">standard specified as a part of <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|MPEG-4] <span style="font-family: 'Century Gothic','sans-serif';">. It is most commonly used to store <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|digital video] <span style="font-family: 'Century Gothic','sans-serif';">and <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|digital audio] <span style="font-family: 'Century Gothic','sans-serif';">streams, especially those defined by <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|MPEG] <span style="font-family: 'Century Gothic','sans-serif';">, but can also be used to store other data such as <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|subtitles] <span style="font-family: 'Century Gothic','sans-serif';">and still images. Some devices advertised as " <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|MP4 Players] <span style="font-family: 'Century Gothic','sans-serif';">" are simply <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|MP3 Players] <span style="font-family: 'Century Gothic','sans-serif';">that also play <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|AMV video] <span style="font-family: 'Century Gothic','sans-serif';">or some other video format, and do not necessarily play the MPEG-4 part 14 format. <span style="font-family: 'Century Gothic','sans-serif';">Waveform Audio File Format is a <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|Microsoft] <span style="font-family: 'Century Gothic','sans-serif';">and <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|IBM] [|audio file format] <span style="font-family: 'Century Gothic','sans-serif';">standard for storing an audio bitstream on <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|PCs] <span style="font-family: 'Century Gothic','sans-serif';">. It is an application of the <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|Resource Interchange File Format] <span style="font-family: 'Century Gothic','sans-serif';">(RIFF) <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|bitstream format] <span style="font-family: 'Century Gothic','sans-serif';">method for storing data in "chunks", and thus is also close to the <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|8SVX] <span style="font-family: 'Century Gothic','sans-serif';">and the <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|AIFF] <span style="font-family: 'Century Gothic','sans-serif';">format used on <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|Amiga] <span style="font-family: 'Century Gothic','sans-serif';">and <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|Macintosh] <span style="font-family: 'Century Gothic','sans-serif';">computers, respectively. <span style="font-family: 'Century Gothic','sans-serif';">It is the main format used on <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|Windows] <span style="font-family: 'Century Gothic','sans-serif';">systems for raw and typically uncompressed audio. The usual bitstream encoding is the <span style="color: windowtext; font-family: 'Century Gothic','sans-serif'; text-decoration: none;">[|linear pulse-code modulation] <span style="font-family: 'Century Gothic','sans-serif';">(LPCM) format.

<span style="font-family: 'century gothic','sans-serif';">4) __<span style="font-family: 'Century Gothic','sans-serif';">File formats: MP3, MP4, and WAV __
<span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">MP3: It consists only of audio and is very much like WAV but this one is more compressed which makes in comparison the WAV uncompressed, it serves to make the files compressed or smaller. <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">MP4: Is like an MP3, but it does not consist of only audio, it consists also of video, text and images. YouTube, some video sites and other portable players use this file type. Stores more than MP3 <span style="font-family: 'arial','sans-serif';">- <span style="font-family: 'Century Gothic','sans-serif';">WAV: Is a Microsoft size file and one of the first audio files created for PC and very compressed, which means it only has certain quantity of availability for audio to store, more than MP3


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__<span style="font-family: 'Century Gothic','sans-serif';">Questions (Audio Editing Software & Podcast) __
<span style="font-family: 'century gothic','sans-serif';">1) __<span style="font-family: 'Century Gothic','sans-serif';">State what is an audio editing software __ <span style="font-family: 'century gothic','sans-serif';">2) __<span style="font-family: 'Century Gothic','sans-serif';">Outline one home and one professional use. __ <span style="font-family: 'century gothic','sans-serif';">3) __<span style="font-family: 'Century Gothic','sans-serif';">Explain what a Podcast is. __

__<span style="font-family: 'Century Gothic','sans-serif';">Questions (Digital audio: MIDI, MP3, MP4, WAW) __
<span style="color: black; font-family: 'century gothic','sans-serif';">1) __<span style="color: black; font-family: 'Century Gothic','sans-serif';">Identify what AIFF, WMA AVI and RMF stands for? __ <span style="color: black; font-family: 'century gothic','sans-serif';">2) __<span style="color: black; font-family: 'Century Gothic','sans-serif';">Define MIDI (Music Instrumental Digital Interface): __ <span style="color: black; font-family: 'century gothic','sans-serif';">3) __<span style="color: black; font-family: 'Century Gothic','sans-serif';">Contrast MIDI (Music Instrumental Digital Interface) and WMA (Windows Media Audio) __

__ <span style="font-family: 'Century Gothic','sans-serif';">Questions <span style="font-family: Arial,Helvetica,sans-serif;">File formats: MP3, MP4, and WAV __
__<span style="font-family: Arial,Helvetica,sans-serif;">1) State the differences between MP3 and MP4. __ <span style="color: #333333; font-family: 'tahoma','sans-serif'; font-size: 14px;">2) __<span style="color: #333333; font-family: 'Century Gothic','sans-serif';">Outline what a WAV is. __ <span style="color: #333333; font-family: 'tahoma','sans-serif'; font-size: 14px;">3) __<span style="color: #333333; font-family: 'Century Gothic','sans-serif';">Compare and Contrast an MP3, MP4 and WAV. __

//__<span style="font-family: 'Century Gothic','sans-serif'; font-size: 16px;">Group Members: __// - //<span style="font-family: 'Century Gothic','sans-serif'; font-size: 16px;">María Fernanda Sifuentes // - //<span style="font-family: 'Century Gothic','sans-serif'; font-size: 16px;">Gabriel Alarco // - //<span style="font-family: 'Century Gothic','sans-serif'; font-size: 16px;">Andres Chavez // - //<span style="font-family: 'Century Gothic','sans-serif'; font-size: 16px;">Alesandra Santamaría //