Ministry of Higher Education, Science and Innovation of the Republic of Uzbekistan
Tashkent University of Information Technologies named after Muhammad al-Khorazmi
Assignment 3
Done by: Shobotayev Javlonbek
Received: Xoldorov .Sh.
Tashkent – 2023
Pycharm muhitida signallarga raqamli ishlov berish
Berilgan funktsiyalardan variant tanlanib, olingan variantlar ustida quyidagi amallar bajariladi:
Funksiya uchun Hara o’zgartirishi
2. Nutq signali uchun Hara o’zgartirishi
10.
|
|
|
Shobo‘tayev Javlonbek Bahodir o‘g‘li 424-21
|
Berilgan funksiya
import numpy as np
import matplotlib.pyplot as plt
# Funksiya
def funksiya(x):
return (x**2 + 1)**np.cos(x)
# Berilgan interval va delta x
x_interval = np.arange(0, 1.01, 0.01)
x_tasvir = np.arange(0, 6.28, 3.14/16)
# Funksiyani hisoblash
y_interval = funksiya(x_interval)
y_tasvir = funksiya(x_tasvir)
# Natijalarni bitta grafikda chiqarish
plt.figure(figsize=(10, 5))
plt.plot(x_interval, y_interval, label='Interval [0, 1]')
plt.plot(x_tasvir, y_tasvir, label='Interval [0, 6.28]')
plt.title('Funksiyaning o\'zgarishi')
plt.xlabel('x')
plt.ylabel('y')
plt.legend()
plt.show()
Berilgan funksiyani o’zgartirish dasturi.
O’zgartirilgandan keyingi grafik tasvir.
Ovozli signalga hara o’zgartirishikiritish
import numpy as np
import matplotlib.pyplot as plt
from scipy.io import wavfile
from scipy.signal import spectrogram
# Funksiyalar
def tasvirlash(signal, fs, label):
time = np.arange(0, len(signal)) / fs
plt.plot(time, signal, label=label)
def audio_spektri(signal, fs, label):
f, t, Sxx = spectrogram(signal, fs)
plt.pcolormesh(t, f, 10 * np.log10(Sxx), label=label)
def amplitudagram(signal, fs, label):
time = np.arange(0, len(signal)) / fs
plt.plot(time, np.abs(signal), label=label)
# Ovozni o'qish
fs, signal = wavfile.read("javlonbek.wav")
# O'zgarmagan holatni tasvirlash
plt.figure(figsize=(15, 5))
plt.subplot(131)
tasvirlash(signal, fs, 'O\'zgarmagan holat')
plt.title('O\'zgarmagan holat')
plt.xlabel('Vaqt (s)')
plt.ylabel('Amplituda')
plt.legend()
plt.subplot(132)
audio_spektri(signal, fs, 'O\'zgarmagan holat')
plt.title('O\'zgarmagan holatning audio spektri')
plt.xlabel('Vaqt (s)')
plt.ylabel('Frekans (Hz)')
plt.legend()
plt.subplot(133)
amplitudagram(signal, fs, 'O\'zgarmagan holat')
plt.title('O\'zgarmagan holatning amplitudagrami')
plt.xlabel('Vaqt (s)')
plt.ylabel('Amplituda')
plt.legend()
plt.tight_layout()
plt.show()
# Ovozni o'zgartirish
# Masalan, ovozni balansini o'zgartirish
signal_changed = signal * 2
# O'zgarmagan holatni tasvirlash
plt.figure(figsize=(15, 5))
plt.subplot(131)
tasvirlash(signal_changed, fs, 'O\'zgarilgan holat')
plt.title('O\'zgarilgan holat')
plt.xlabel('Vaqt (s)')
plt.ylabel('Amplituda')
plt.legend()
plt.subplot(132)
audio_spektri(signal_changed, fs, 'O\'zgarilgan holat')
plt.title('O\'zgarilgan holatning audio spektri')
plt.xlabel('Vaqt (s)')
plt.ylabel('Frekans (Hz)')
plt.legend()
plt.subplot(133)
amplitudagram(signal_changed, fs, 'O\'zgarilgan holat')
plt.title('O\'zgarilgan holatning amplitudagrami')
plt.xlabel('Vaqt (s)')
plt.ylabel('Amplituda')
plt.legend()
plt.tight_layout()
plt.show()
ma’lum ovozli habarga o’zgartiriw kiritish dastur kodi.
Ovozli habar(wav formatida).
O’zgartirish kiritishdan avvalgi holat.
O’zgartirish kiritilganidan keyingi holat.
|
