Image File Size Calculation
To calculate the file size of an image file, you'll need to know the image resolution and the color depth. Here's how you do it:
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Image Resolution: This is the total number of pixels in the image, calculated as width × height.
Example: If the image resolution is 1920x1080 pixels, the total number of pixels is: 1920 times 1080 = 2,073,600 pixels.
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Color Depth: This indicates the number of bits used to represent each pixel. Common color depths include 8-bit (256 colors), 16-bit (65,536 colors), and 24-bit (16.7 million colors).
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Calculation: Multiply the total number of pixels by the color depth (in bits) and then convert bits to bytes (1 byte = 8 bits).
Example: If the color depth is 24-bit, the file size in bits is: 2,073,600 {pixels} times 24 {bits/pixel} = 49,766,400 {bits}
Convert bits to bytes: 49,766,400 {bits} / 8 = 6,220,800 bytes
Convert bytes to kilobytes (KB) (1 KB = 1024 bytes): 6,220,800 bytes / 1024 = 6075 KB
Convert kilobytes to megabytes (MB) (1 MB = 1024 KB): 6075 KB / 1024 = 5.93 MB
So, the file size of the image is approximately 5.93 MB.
Sound File Size Calculation
To calculate the file size of a sound file, you'll need to know the sound sample rate, resolution, and length of the track. Here's how you do it:
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Sample Rate: This is the number of samples taken per second, measured in Hertz (Hz). Common sample rates include 44.1 kHz (CD quality) and 48 kHz.
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Resolution (Bit Depth): This is the number of bits used to represent each sample. Common bit depths include 16-bit and 24-bit.
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Length of Track: This is the duration of the audio, measured in seconds.
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Channels: Number of audio channels (e.g., 1 for mono, 2 for stereo).
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Calculation: Multiply the sample rate by the resolution (in bits), the length of the track (in seconds), and the number of channels. Then convert bits to bytes.
Example: If the sample rate is 44.1 kHz, the resolution is 16-bit, the track length is 180 seconds (3 minutes), and it's stereo (2 channels), the file size in bits is: 44,100 {samples/second} times 16 {bits/sample} times 180 {seconds} times 2 {channels} = 254,016,000 bits
Convert bits to bytes: 254,016,000 bits / 8 = 31,752,000 bytes
Convert bytes to kilobytes (KB) (1 KB = 1024 bytes): 31,752,000 bytes / 1024 = 31,031.25 KB
Convert kilobytes to megabytes (MB) (1 MB = 1024 KB): 31,031.25 KB / 1024 = 30.31 MB
So, the file size of the sound file is approximately 30.31 MB.