Digital audio
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Digital audio is a technology that uses digital encoding to record, store, manipulate and reproduce sound via audio signals. It involves converting analog sound waves to digital signals using an analog-to-digital converter, allowing sound to be stored and processed digitally. During the 1970s and 1990s, digital audio advanced and gradually replaced analog audio in areas like sound recording and engineering due to benefits like greater accuracy and less degradation. The process involves capturing sound waves with a microphone, converting them to electrical signals, and then back to sound waves for playback.
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Video file format
MP4 is a widely compatible file format that can support many video and audio codecs. It has become more popular than other formats like QuickTime, AVI, WMV, and MKV due to its features and ability to play on many devices without issues. MP4 is commonly used to embed video in PowerPoint presentations, for company promotional videos, and for downloading online videos to play on different media players or burn to DVDs. The format can support video codecs like H.264, HEVC, and audio codecs like MP3, AAC. MP4 files can be played on devices like iPhones, Android phones, Windows phones, and computers as well as through common media player programs and online video sites.
Audio file format
The document discusses the MP3 file format. It describes MP3 as a standard technology for compressing audio files to around 1/12 their original size while maintaining sound quality. The format uses MP3 frames containing a header and data block in a sequence of elementary streams. Higher bitrates in MP3 files produce higher quality sound closer to the original recording, while lower bitrates can be used for less complex audio passages. Metadata tags are not defined in the MP3 standard and licensing of related patents varies by region.
Image file format
The document discusses the JPEG image file format. JPEG stands for Joint Photographic Experts Group and is a popular format that supports up to 16 million colors. JPEG files use the extensions .jpg, .jpeg, .jpe, .jfif or .jif. A JPEG file consists of segments marked by markers including information like quantization tables and Huffman coding tables. JPEG is a lossy compression format that works well for photos but can cause artifacts, especially at higher compression levels. Variants include JPS for stereoscopic images and MPO for multiple images in one file.
post-production
The document discusses the key roles of video editors including editing raw footage, adding transition effects between scenes, incorporating sound, and dubbing videos into other languages. Editors refine raw video material to clarify the director's vision, while some also showcase their own creativity. Transition effects are particularly important for action movies to enhance the viewing experience. Sound is essential for completeness and to further immerse the audience, while dubbing allows films to reach wider audiences in their native language.
Arthved kalyan assignment
Animation is created by displaying a series of images or frames in rapid succession to create the illusion of movement. Animators use individual images called frames to show movement, presenting them in a sequence at a rate of frames per second. There are different types of animation including traditional 2D animation, 3D animation using CGI, and stop motion animation using real objects. Popular software tools for creating animation include Autodesk Maya, Autodesk 3D Max, and Adobe After Effects. Famous animators include Walt Disney, Hayao Miyazaki, and John Lasseter.
Graphics and Audio
The document discusses capturing and editing multimedia, including images and audio. It notes that cameras and mobile phones can be used to capture images, and audio recorders or mobile phones can record audio. Software mentioned for image editing includes Adobe Photoshop, Picasa, and GIMP, while software for audio editing includes Adobe Audition, Audacity, and FL Studio. The document recommends getting training from professionals, attending seminars, being creative, and trying innovative ideas to improve multimedia skills.
Music production in budget
The document provides tips for starting electronic music production on a budget. It recommends first planning and budgeting expenses. The bare essentials are a full version of a digital audio workstation (DAW) like Reaper, which offers a free trial, and a quality pair of headphones for monitoring. Additional items like plugins, MIDI keyboards, and microphones are optional but can be helpful. It's important to educate yourself through free resources at first before investing in books or courses. With proper planning and prioritizing essential gear like a DAW and headphones first, the document argues that electronic music production can be started without breaking the bank.
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Digital audio
- 2. Digital audio is a technology that can be used to record, store, generate, manipulate, and reproduce sound using audio signals that have been encoded in digital form. A microphone converts sound to an analog electrical signal, then an analog-to-digital converter (ADC)—typically using pulse-code modulation—converts the analog signal into a digital signal.
- 3. Following significant advances in digital audio technology during the 1970s, it gradually replaced analog audio technology in many areas of sound production, sound recording (tape systems were replaced with digital recording systems), sound engineering and telecommunications in the 1990s and 2000s.
- 4. An analog audio system captures sounds, and converts their physical waveforms into electrical representations of those waveforms by use of a transducer, such as a microphone. The sounds are then stored, as on tape, or transmitted. The process is reversed for playback: the audio signal is amplified and then converted back into physical waveforms via a loudspeaker. Analog audio retains its fundamental wave-like characteristics throughout its storage, transformation, duplication, and amplification.
- 5. Conversion process The lifecycle of sound from its source, through an ADC, digital processing, a DAC, and finally as sound again.
- 6. Technologies Digital audio broadcasting Digital Audio Broadcasting (DAB) HD Radio Digital Radio Mondiale (DRM) In-band on-channel (IBOC)
- 7. Storage technologies Digital audio player Digital Audio Tape (DAT) Digital Compact Cassette (DCC) Compact Disc (CD) Hard disk recorder DVD-Audio Mini Disc Super Audio CD Blu-ray Disc (BD) Various audio file formats
- 8. THANK YOU