Question

вычислите сколько байтов занимает на CD одна минута звукозаписи ( частота жискретизации - 44000, рязрядность - 16 битов ) . какова максимальная продолжительность звукозаписи на диске ёмкостью 700 МБ ?

Answer 1

не люблю я эту инфу,но вот 

V=60*44000*2*2=10560000 байт.

t=734003200/44000*2*2=4140 сек=69 мин.

Answer 2

Calculation of the Size of Sound Recording on a CD

To calculate the number of bytes occupied by one minute of sound recording on a CD, we need to consider the sampling rate and the bit depth.

The sampling rate is the number of samples taken per second to represent the audio signal. In this case, the sampling rate is given as 44,000 samples per second.

The bit depth refers to the number of bits used to represent each sample. In this case, the bit depth is given as 16 bits.

To calculate the size of one minute of sound recording, we can use the following formula:

Size = (Sampling Rate) x (Bit Depth) x (Duration)

Substituting the given values:

Size = 44,000 samples/second x 16 bits/sample x 60 seconds

Calculating this, we get:

Size = 44,000 x 16 x 60 = 42,240,000 bytes

Therefore, one minute of sound recording on a CD with a sampling rate of 44,000 and a bit depth of 16 bits occupies approximately 42,240,000 bytes.

Maximum Duration of Sound Recording on a 700 MB CD

To calculate the maximum duration of sound recording on a CD with a capacity of 700 MB, we need to convert the capacity from megabytes to bytes.

1 MB is equal to 1,048,576 bytes.

Therefore, the capacity of a 700 MB CD is:

Capacity = 700 MB x 1,048,576 bytes/MB

Calculating this, we get:

Capacity = 734,003,200 bytes

Now, we can calculate the maximum duration of sound recording using the formula:

Duration = (Capacity) / (Size)

Substituting the values:

Duration = 734,003,200 bytes / 42,240,000 bytes/minute

Calculating this, we get:

Duration ≈ 17.36 minutes

Therefore, the maximum duration of sound recording on a CD with a capacity of 700 MB is approximately 17.36 minutes.

Please note that these calculations are approximate and may vary depending on the specific encoding and formatting used for the audio files on the CD.