use AppleScript version "2.4" — Yosemite (10.10) or later
use framework "Foundation"
use framework "AppKit"
use framework "AVFoundation"
use scripting additions
use slLib : script "sliderLib"

property |NSURL| : a reference to current application’s |NSURL|
property NSDate : a reference to current application’s NSDate
property NSUUID : a reference to current application’s NSUUID
property NSFileManager : a reference to current application’s NSFileManager
property AVAudioPlayer : a reference to current application’s AVAudioPlayer
property NSDateFormatter : a reference to current application’s NSDateFormatter
property NSSpeechSynthesizer : a reference to current application’s NSSpeechSynthesizer

set aInfo to clipboard info
set uCount to (clipboard info for Unicode text)
if uCount = {} then
　　display dialog "There is no text information in the clipboard" with title "Terminate information" buttons {"OK"} default button 1 with icon 2
　　return
end if

set totalCount to item 2 of item 1 of uCount

set aStr to the clipboard as text

–読み上げ内容の確認
display dialog aStr with title "Text length:" & (uCount as string) & " chars."

–読み上げ速度をSliderで入力
set rRes to slLib’s chooseBySlider(180, 220, "Select TTS reading pitch (small number:slow)")

–読み上げTTSキャラクタの選択
set aLoc to (current application’s NSLocale’s currentLocale()’s identifier()) as string –>　　"ja_JP"
set vList to getTTSVoiceNameWithLanguage(aLoc) of me
set vRes to choose from list vList with prompt ("Select TTS Voice in your language :" & aLoc) without empty selection allowed
if vRes = false then return

set vCharacter to contents of first item of vRes

–音声ファイルの作成先パスを求める
set aUUID to NSUUID’s UUID()’s UUIDString() as string
set aPath to (((path to movies folder) as string) & aUUID & ".aif")
set aPOSIX to POSIX path of aPath

–音声レンダリング
tell current application
　　say aStr using vCharacter saving to (aPOSIX) speaking rate rRes without waiting until completion
end tell

–レンダリングした音声の読み上げ所要時間を計算
set aDur to getDuration(aPath as alias) of me

–レンダリングした音声ファイルをオープン
tell application "QuickTime Player"
　　open aPath
end tell

–完了報告
display dialog "読み上げ所要時間：" & my formatHMS(aDur)

on getTTSVoiceNameWithLanguage(voiceLang)
　　set outArray to current application’s NSMutableArray’s new()
　　
　　set aList to NSSpeechSynthesizer’s availableVoices()
　　set bList to aList as list
　　
　　repeat with i in bList
　　　　set j to contents of i
　　　　set aDIc to (NSSpeechSynthesizer’s attributesForVoice:j)
　　　　(outArray’s addObject:aDIc)
　　end repeat
　　
　　set aPredicate to current application’s NSPredicate’s predicateWithFormat_("VoiceLocaleIdentifier == %@", voiceLang)
　　set filteredArray to outArray’s filteredArrayUsingPredicate:aPredicate
　　set aResList to (filteredArray’s valueForKey:"VoiceName") as list
　　
　　return aResList
end getTTSVoiceNameWithLanguage

on getDuration(aFile)
　　set aURL to |NSURL|’s fileURLWithPath:(POSIX path of aFile)
　　
　　repeat 1000 times
　　　　set aAudioPlayer to AVAudioPlayer’s alloc()’s initWithContentsOfURL:aURL |error|:(missing value)
　　　　set aRes to aAudioPlayer’s prepareToPlay()
　　　　if aRes as boolean = true then exit repeat
　　　　delay 0.5
　　end repeat
　　
　　set channelCount to aAudioPlayer’s numberOfChannels()
　　set aDuration to aAudioPlayer’s duration()
　　return aDuration as real
end getDuration

on retAvailableTTSnames()
　　set outList to {}
　　
　　set aList to NSSpeechSynthesizer’s availableVoices()
　　set bList to aList as list
　　
　　repeat with i in bList
　　　　set j to contents of i
　　　　set aInfo to (NSSpeechSynthesizer’s attributesForVoice:j)
　　　　set aInfoRec to aInfo as record
　　　　set aName to VoiceName of aInfoRec
　　　　set the end of outList to aName
　　end repeat
　　
　　return outList
end retAvailableTTSnames

on formatHMS(aTime)
　　set aDate to NSDate’s dateWithTimeIntervalSince1970:aTime
　　set aFormatter to NSDateFormatter’s alloc()’s init()
　　
　　—This formatter text is localized in Japanese.
　　if aTime < hours then
　　　　aFormatter’s setDateFormat:"mm分ss秒"
　　else if aTime < days then
　　　　aFormatter’s setDateFormat:"HH時間mm分ss秒"
　　else
　　　　aFormatter’s setDateFormat:"DD日HH時間mm分ss秒"
　　end if
　　
　　set timeStr to (aFormatter’s stringFromDate:aDate) as string
　　return timeStr
end formatHMS