Multimedia MCQs-3

Lossless compression algorithms generally reduce the size of a file by approximately 50%, though this varies based on the redundancy of the original data.

Compression is used to save disk space (storage) and to speed up data transmission and processing by reducing the total volume of data.

Lossy (Loss) compression is ideal when extreme file size reduction is more important than maintaining a perfect, bit-for-bit replica of the original.

Non-immersive VR allows the user to view a 3D environment on a standard monitor while remaining fully aware of their actual physical surroundings.

Frames are the individual still images that, when played in rapid succession, create the appearance of motion in a video.

Immersive VR uses specialized equipment like Head-Mounted Displays (HMDs) to completely block the real world and surround the user with a digital one.

On a hard drive or floppy disk, a track is one of the many concentric circles on the surface of the platter where data is stored.

MPEG-1 was originally developed to provide video and audio compression for Video CDs (VCDs) at a bitrate of about 1.5 Mbps.

Lossy (Loss) compression achieves smaller file sizes by permanently removing data that the human eye or ear is less likely to perceive.

MIDI (Musical Instrument Digital Interface) stores musical data as a series of commands (pitch, duration, etc.) rather than a recording of the actual sound waves.

The JPEG process begins with a Discrete Cosine Transform (DCT), which converts pixel data from the spatial domain to the frequency domain.

Quantization is the stage where the frequency coefficients are divided by a constant, resulting in the actual loss of data that makes the file smaller.

The final phase of JPEG involves using an entropy coding method (like Huffman coding) to compress the remaining data as efficiently as possible.

Lossy compression works because the human eye and brain are incapable of perceiving the specific data points that the algorithm discards.

MMS (Multimedia Messaging Service) is the standard protocol used to send messages that include images, video clips, or audio over cellular networks.

Animation, Audio, and Video are core digital media components, whereas a 'Voice Script' is a textual blueprint used during production.

In live streaming, you cannot jump ahead (random access) because the data is being generated and transmitted in real-time.

Interactivity refers to the degree to which a user can participate in or manipulate the digital content they are interacting with.

AIFF (Audio Interchange File Format) was developed by Apple Inc. for use on Macintosh computers and is based on Electronic Arts' IFF format.

Lossy and lossless are the two fundamental categories of compression algorithms used to reduce the size of digital files.