speechrate.php

<?php
namespace Bitrix\Sender\Integration\VoxImplant;
 
class SpeechRate
{
    private $speedId;
 
    private $text = '';
 
    public static function create()
    {
        return new static();
    }
 
    public function __construct()
    {
    }
 
    public function withSpeed($speedId = null)
    {
        $this->speedId = $speedId;
        return $this;
    }
 
    public function withText($text = '')
    {
        $this->text = $text;
        return $this;
    }
 
    public function getDuration()
    {
        return mb_strlen($this->text) * $this->getRatioPerChar();
    }
 
    private function getRatioPerChar()
    {
        $rates = self::getList();
        $rate = isset($rates[$this->speedId]) ? $rates[$this->speedId] : $rates['medium'];
 
        return self::getBaseInterval() / $rate;
    }
 
    public static function getList()
    {
        return array(
            'x-slow' => 270,
            'slow' => 300,
            'medium' => 340,
            'fast' => 370,
            'x-fast' => 400
        );
    }
 
    public static function getBaseInterval()
    {
        return 30;
    }
}